Search Results - Books - In Stock - £20 to £35 - Adult Non-Fiction - Commission on Engineering and Technical Systems - Building Research Board
Order within 4hrs 8mins for Next Day Delivery
View Basket
Sign Out
Early Years View All
BrowseEarly YearsPrimarySecondaryFurther EducationAcademicVLeBooks
Top Categories
Popular TitlesBook BundlesComing SoonNew & NoteworthyAccelerated ReaderTikTok Made Me Read It
Non-Fiction Books
Biography & MemoirsHistoryMusicSportWildlifeView More...
Publisher
Crown HouseDorling Kindersley (DK)GMC DistributionMacmillanWileyView More...
Fiction Books
Animal storiesClassic crimeEnviroment storiesFantasyGraphic NovelsView More...
Author
David AlmondKwame AlexanderMalorie BlackmanSarah CrossanWilliam ShakespeareView More...
Children's Books
Bedtime StoriesBig BooksBoard BooksPicture BooksSoft Toys & GamesView More...
eBooks
AcademicCollectionsNew eBooksPrimary Box SetsPromotionsSecondary Box sets
Popular Topics
Black Lives, Black HistoryDiversity MattersFantastic FemalesLGBTQ+Mental Health AwarenessLooking After Our Planet
Not To Be Missed
Book ReviewsBlogEnglish MasteryOfficial Book AwardsSchool Book AwardsYoto Carnegies
Other
DictionariesDVD’sExam BoardsScotland ResourcesSENDTimeline of Events
Nursery Essentials
100 Essential Picture BooksFairytales & FablesNursery Rhymes & SongsSound BooksStory Board BooksTouch and Feel
Topics
Animal StoriesDinosaursFestivals & CelebrationsFunny StoriesPeople Who Help UsView More...
First Learning
ABC and First WordsColoursNumbers & CountingRhyming & WordplaySeasons & TimeView More...
Conversation Starters
Black Lives, Black HistoryBooks to Inspire ReadingDiversity MattersLooking after our PlanetRefugees & ImmigrationStarting School
Favourite Characters
BlueyElmerPaddingtonPeppa PigThe GruffaloView More...
Personal Development
All Kinds of FamiliesCelebrating GrandparentsFantastic FemalesFirst ExperiencesMental HealthPositively Me!
Favourite Series
Baby Touch & FeelCampbell Busy BooksFirst Questions & AnswersLadybird First Favourite TalesThat's Not My…View More...
Classroom Essentials
Big BooksNumiconPie Corbett CollectionsReading SchemesTeacher Resources/CPDToys and Games
Authors/Illustrators
Dapo AdeolaJoseph CoelhoJulia DonaldsonTom FletcherSue HendraView More...
Browns Recommends
Book BundlesCarnegie Medal for IllustrationGreat Books to Read AloudNew & NoteworthyOfficial Book AwardsTimeline of Events
Reading and Phonics
Accelerated ReaderAR Kids Reading Report '23AR: Newly QuizzedBook BandsPie Corbett CollectionsReading Schemes
Topics
Fiction by Genre – KS1Fiction by Genre – KS2Topic Collections - Early YearsTopic Collections - KS1Topic Collections - KS2
Reading Support
Dual & Foreign LanguageHow to Write a StoryPicture Books for KS1Picture Books for KS2Reluctant & Dyslexic ReadersWordless Picture Books
Conversation Starters
Black Lives, Black HistoryDiversity MattersFantastic FemalesFestivals & CelebrationsLooking After Our PlanetRefugees & Immigration
Reading for Pleasure
Fantastic FactsFavourite Classroom ReadsFilm & TV AdaptationsGraphic NovelsNarrative Non-FictionRead Around the World
Personal Development
Bullying AwarenessInspirational LivesMental HealthPeople Who Help UsRead for Empathy 2024Starting Secondary School
Library Collections
100 Best Fiction for Y1-Y6100 Best Non-Fiction for Y1-Y6Favourite Authors, A-ZSeries: Early Readers & KS1Series: Lower KS2Shakespeare
Classroom Essentials
11+ ExamsDictionariesNumiconScotland ResourcesTeacher Resources/CPDWales Resources
Browns Bestsellers
Bestselling New FictionBestselling New Non-FictionBook BundlesEssential PoetryFavourite AudiobooksTop 50 Graphic Novels
Browns Recommends
2023 Award WinnersChildren's Laureate 2022-2024New and NoteworthyOfficial Book AwardsSchool Book AwardsTimeline of Events
Reading for Pleasure
Favourite Authors A-ZGraphic Novels & MangaNarrative Non-FictionRead Around the WorldTikTok Made Me Read ItTV and Film Adaptations
GCSE by Exam Board
AQAEdexcelIGCSEOCRWJEC / EduqasView More...
Fiction by Genre
HistoricalHumourRomanceShort StoriesThrillersView More...
Key Debates & Topics
Black Lives, Black HistoryConflicts & TerrorismDiversity MattersMaking Sense of Our WorldOur Planet in DangerRefugees & Immigration
Non-Fiction by Subject
BiographiesGeographyHistoryHobbiesSportView More...
Personal Development
Bullying AwarenessCareersFantastic FemalesManaging Exam StressMental HealthRead for Empathy 2024
Reading Support
Accelerated ReaderDual & Foreign LanguageGraded Readers (CEFR)English MasteryReluctant & Dyslexic ReadersShakespeare
Classroom Essentials
DictionariesNorthern Ireland (CCEA)Scotland ResourcesTeacher Resources/CPDWales Resources
Browns Bestsellers
Audio BooksBestselling New FictionBestselling New Non-FictionEssential PoetryTop 30 Graphic Novels - KS3Top 30 Graphic Novels - KS4
Browns Recommends
2023 Award WinnersAR Kids Reading Report '23Book BundlesNew and NoteworthyOfficial Book AwardsTimeline of Events
Reading for Pleasure
Feel Good FictionFilm and TV AdaptationsGraphic Novels & MangaMyths RetoldTikTok Made Me Read ItView More...
A-Level by Exam Board
AQAEdexcelIALOCRWJEC / EduqasView More...
Fiction by Genre
CrimeFantasyHistoricalRomantic FictionSci-FiView More...
A-Level: Wider Reading
ArtEconomicsMusicPhilosophyShakespeareView More...
Non-Fiction by Subject
BiographiesNarrative Non-FictionPopular ScienceStudent CookbooksTrue CrimeUK Politics
Student Essentials
CareersManaging Exam StressMoney MattersReady for Uni - Reading ListsStudy SkillsView More...
Key Debates & Topics
Black Lives, Black HistoryDiversity MattersFantastic FemalesMental HealthOur Planet in DangerRefugees & Immigration
Classroom Essentials
Graded Readers (CEFR)Northern Ireland (CCEA)Scotland ResourcesT LevelsTeacher Resources/CPDWales Resources
Browns Bestsellers
Best New BiographiesBestselling New FictionBestselling New Non-FictionEssential PoetryNow StreamingQuick Reads
Browns Recommends
2023 Award WinnersAcademic NewsletterDVD CollectionsNew and NoteworthyOfficial Book AwardsTimeline of Events
Reading for Pleasure
Books by Authors of ColourGraphic NovelsLGBTQ+ Fiction Now StreamingTikTok Made Me Read It View more...
Education Studies
Early Childhood StudiesEarly Years TeachingEducation StudiesPrimary TeachingSecondary TeachingSEN Teaching
Student Essentials
Academic Writing & Research Careers Cooking on a BudgetMental HealthMoney Matters View More...
Health and Medicine
Biomedical ScienceDentistryMedicineMidwiferyNursing (Adult)View More...
Key Debates & Topics
AIConflicts Equality, Inclusion, Diversity Human Migration Net Zero Politics
Law and Politics
Criminal Law European Law Family Law International Relations Law of Tort View More...
Arts and Humanities
Art & Design Drama English Language English Literature Film Studies View More...
Sciences/Engineering
BiologyChemistryEngineeringGeographyPhysicsView More...
Business
Accounting Economics Entrepreneurship ManagementMarketing View More...
Browns Recommends
2023 Award WinnersAcademic NewsletterBestselling eBooksNew and NoteworthyOfficial Book AwardsTimeline of Events
About VLeBooks
Register for VLeBooksApplication FormRequest Inspection CopiesLeave FeedbackFAQsTerms and Conditions
Further Education
Foreign Language titlesGraphic Novels & MangaLGBTQ+Mental HealthNew FictionView More...
Teacher Hub
CPDEarly Years TeachingPrimary TeachingSecondary TeachingSEN / SENDWellbeing for Teachers
FE Curriculum
A Level by SubjectCambridge A-LevelIB DiplomaNorthern Ireland (CCEA)Scotland: Highers/Adv HighersVocational Training
Primary
Favourite Authors A-ZKS1 FictionKS2 FictionMental HealthPrimary Topics View More...
Academic
BiographiesCrime FictionMyths RetoldNew FictionRomance FictionWordsworth Classics
Secondary
Favourite SeriesFiction by GenreKS3 FictionKS4 FictionReluctant & Dyslexic ReadersView More...
Academic Subjects
AccountingBritish PoliticsDentistryMarketingPsychologyView More...
Secondary Curriculum
CareersGCSE by SubjectGraded Readers (CEFR)IGCSENorthern Ireland (CCEA)Scotland: National 4/5
Browns Recommends
2023 Award WinnersBestsellersExclusive CollectionsNew eBooksVLeBooks Promotions
Saved Searches
My Saved Searches
Image for Impact of Selling the Federal Helium Reserve

Impact of Selling the Federal Helium Reserve

Ebook 18 May 2000
ISBN: 9780309171878
Licence From
£34.79
Special order line: only available to educational & business accounts. Sign In
Image for Integrated Design of Alternative Technologies for Bulk-Only Chemical Agent Disposal Facilities

Integrated Design of Alternative Technologies for Bulk-Only Chemical Agent Disposal Facilities

series The Compass Series
Ebook 19 May 2000
ISBN: 9780309171885
Dewey: 355.62137
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Streamlining Space Launch Range Safety

Streamlining Space Launch Range Safety

Ebook 15 Mar 2000
ISBN: 9780309172141
Licence From
£34.79
Special order line: only available to educational & business accounts. Sign In
Image for Review of the Research Strategy for Biomass-Derived Transportation Fuels

Review of the Research Strategy for Biomass-Derived Transportation Fuels

series The Compass Series
Ebook 11 Nov 1999
ISBN: 9780309172516
Dewey: 333.9539
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Improving Surface Transportation Security: A Research and Development Strategy

Improving Surface Transportation Security: A Research and Development Strategy

Ebook 12 Oct 1999
ISBN: 9780309172639
Dewey: 363.12556
Licence From
£20.39
Special order line: only available to educational & business accounts. Sign In
Image for Industrial Technology Assessments: An Evaluation of the Research Program of the Office of Industrial Technologies

Industrial Technology Assessments: An Evaluation of the Research Program of the Office of Industrial Technologies

Ebook 18 Aug 1999
ISBN: 9780309172707
Dewey: 333.7965072073
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Spills of Nonfloating Oils: Risk and Response

Spills of Nonfloating Oils: Risk and Response

Ebook 27 Jul 1999
ISBN: 9780309172738
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Reusable Launch Vehicle: Technology Development and Test Program

Reusable Launch Vehicle: Technology Development and Test Program

Ebook 8 Jan 1996
ISBN: 9780309175869
Dewey: 629.47
Licence From
£33.59
Special order line: only available to educational & business accounts. Sign In
Image for Aviation Weather Services: A Call For Federal Leadership and Action

Aviation Weather Services: A Call For Federal Leadership and Action

Ebook 2 Nov 1995
ISBN: 9780309176033
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Review of the U.S. Department of Energy's Heavy Vehicle Technologies Program

Review of the U.S. Department of Energy's Heavy Vehicle Technologies Program

series The Compass Series
Ebook 1 Nov 2000
ISBN: 9780309183802
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Environmental Management Systems and ISO 14001: Federal Facilities Council Report No. 138

Environmental Management Systems and ISO 14001: Federal Facilities Council Report No. 138 - no. 138

series Federal Facilities Council Report
Ebook 5 Apr 1999
ISBN: 9780309184342
Dewey: 658.408
Licence From
£34.79
Special order line: only available to educational & business accounts. Sign In
Image for Tooele Chemical Agent Disposal Facility: Update on National Research Council Recommendations

Tooele Chemical Agent Disposal Facility: Update on National Research Council Recommendations

Ebook 24 Nov 1999
ISBN: 9780309184403
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Technology-Based Pilot Programs: Improving Future U.S. Military Reserve Forces

Technology-Based Pilot Programs: Improving Future U.S. Military Reserve Forces

series Compass Series
Ebook 1 Sep 1999
ISBN: 9780309184427
Dewey: 355.370973
Licence From
£28.79
Special order line: only available to educational & business accounts. Sign In
Image for Review of the Draft Plan for the Modernization and Associated Restructuring Demonstration

Review of the Draft Plan for the Modernization and Associated Restructuring Demonstration

series The Compass Series
Ebook 23 Mar 1999
ISBN: 9780309184632
Dewey: 354.370973
Licence From
£20.39
Special order line: only available to educational & business accounts. Sign In
Image for Upgrading the space shuttle

Upgrading the space shuttle

series Compass Series
Ebook 21 Jan 1999
ISBN: 9780309517508
Dewey: 629.4410973
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Applying Advanced Information Systems to Ports and Waterways Management

Applying Advanced Information Systems to Ports and Waterways Management

series The Compass Series
Ebook 17 Mar 1999
ISBN: 9780309518130
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for A vision for the National Weather Service: road map for the future

A vision for the National Weather Service: road map for the future

Ebook 4 Mar 1999
ISBN: 9780309518161
Dewey: 354.370973
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for The practicality of pulsed fast neutron transmission spectroscopy for aviation security

The practicality of pulsed fast neutron transmission spectroscopy for aviation security

Ebook 7 Apr 1999
ISBN: 9780309518987
Dewey: 363.2876
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Review of the research program of the Partnership for a New Generation of Vehicles: fifth report

Review of the research program of the Partnership for a New Generation of Vehicles: fifth report

Ebook 29 Apr 1999
ISBN: 9780309519137
Dewey: 333.7968
Licence From
£29.40
Special order line: only available to educational & business accounts. Sign In
Image for Advanced Engineering Environments: Achieving the Vision : Phase 1

Advanced Engineering Environments: Achieving the Vision : Phase 1

Ebook 7 Jun 1999
ISBN: 9780309519526
Dewey: 620.0042
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Carbon filtration for reducing emissions from chemical agent incineration

Carbon filtration for reducing emissions from chemical agent incineration

series The Compass Series
Ebook 12 Aug 1999
ISBN: 9780309520270
Dewey: 623.75
Licence From
£34.20
Special order line: only available to educational & business accounts. Sign In
Image for Engineering education: designing an adaptive system

Engineering education: designing an adaptive system

Ebook 30 Jun 1995
ISBN: 9780309520515
Dewey: 620.0071173
Licence From
£25.20
Special order line: only available to educational & business accounts. Sign In
Image for Shipbuilding Technology and Education

Shipbuilding Technology and Education

Ebook 22 Apr 1996
ISBN: 9780309521666
Dewey: 623.82
Licence From
£31.80
Special order line: only available to educational & business accounts. Sign In
Image for Review and evaluation of the Air Force Hypersonic Technology Program

Review and evaluation of the Air Force Hypersonic Technology Program

series Compass Series
Ebook 5 Aug 1998
ISBN: 9780309522366
Dewey: 629.13230607207
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Effectiveness of the United States Advanced Battery Consortium as a government-industry partnership

Effectiveness of the United States Advanced Battery Consortium as a government-industry partnership

Ebook 14 Aug 1998
ISBN: 9780309522397
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Manufacturing process controls for the industries of the future

Manufacturing process controls for the industries of the future

series Compass Series
Ebook 14 Aug 1998
ISBN: 9780309522960
Dewey: 670.4227
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Improving the continued airworthiness of civil aircraft: a strategy for the FAA's aircraft certification service

Improving the continued airworthiness of civil aircraft: a strategy for the FAA's aircraft certification service

Ebook 11 Sep 1998
ISBN: 9780309522991
Dewey: 363.124660973
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Protecting the space station from meteoroids and orbital debris

Protecting the space station from meteoroids and orbital debris

series The Compass Series
Ebook 2 Jan 1997
ISBN: 9780309523509
Dewey: 629.47
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Review of the research program of the Partnership for a New Generation of Vehicles: fourth report

Review of the research program of the Partnership for a New Generation of Vehicles: fourth report

Ebook 15 Apr 1998
ISBN: 9780309524018
Dewey: 333.7968
Licence From
£29.40
Special order line: only available to educational & business accounts. Sign In
Image for Intermetallic alloy development: a program evaluation

Intermetallic alloy development: a program evaluation

series The Compass Series
Ebook 20 Feb 1997
ISBN: 9780309524384
Dewey: 620.1696072073
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Advanced technology for human support in space

Advanced technology for human support in space

Ebook 2 Jul 1997
ISBN: 9780309524599
Dewey: 629.477
Licence From
£34.20
Special order line: only available to educational & business accounts. Sign In
Image for Directions in engineering research: an assessment of opportunities and needs

Directions in engineering research: an assessment of opportunities and needs

Ebook 1 Jan 1987
ISBN: 9780309555104
Dewey: 620.0072
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for An international directory of building research organizations

An international directory of building research organizations

Ebook 1 Jan 1988
ISBN: 9780309555401
Dewey: 690.72
Licence From
£27.60
Special order line: only available to educational & business accounts. Sign In
Image for Planetary sciences: American and Soviet research : proceedings from the US-USSR Workshop on Planetary Sciences, January 2-6, 1989, [sponsored by] Academy of Sciences of the Union of Soviet Socialist Republics, National Academy of Sciences of the United States of Americ

Planetary sciences: American and Soviet research : proceedings from the US-USSR Workshop on Planetary Sciences, January 2-6, 1989, [sponsored by] Academy of Sciences of the Union of Soviet Socialist Republics, National Academy of Sciences of the United States of Americ

Ebook 1 Jan 1991
ISBN: 9780309555791
Dewey: 523.4
Licence From
£27.00
Special order line: only available to educational & business accounts. Sign In
Image for Airline Passenger Security Screening: New Technologies and Implementation Issues

Airline Passenger Security Screening: New Technologies and Implementation Issues

Ebook 19 Jun 1996
ISBN: 9780309561129
Licence From
£28.80
Special order line: only available to educational & business accounts. Sign In
Image for Research agenda for test methods and models to simulate the accelerated aging of infrastructure materials: report of a workshop

Research agenda for test methods and models to simulate the accelerated aging of infrastructure materials: report of a workshop

Ebook 29 Jun 1999
ISBN: 9780309561785
Dewey: 620.1122
Licence From
£34.80
Special order line: only available to educational & business accounts. Sign In
Image for Space Station Engineering Design Issues: Report of a Workshop.

Space Station Engineering Design Issues: Report of a Workshop.

Ebook 1 Jan 1989
ISBN: 9780309564359
Dewey: 629.442
Licence From
£28.80
Special order line: only available to educational & business accounts. Sign In
Image for Hurricane Elena, Gulf Coast, August 29-September 2, 1985

Hurricane Elena, Gulf Coast, August 29-September 2, 1985

series Natural Disaster Studies
Ebook 1 Jan 1991
ISBN: 9780309565141
Dewey: 363.3492
Licence From
£28.80
Special order line: only available to educational & business accounts. Sign In
Image for Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1998-1999 Research Program.

Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1998-1999 Research Program.

Ebook 8 May 1997
ISBN: 9780309569002
Licence From
£27.00
Special order line: only available to educational & business accounts. Sign In
Image for Reducing the Costs of Space Science Research Missions: Proceedings of a Workshop.

Reducing the Costs of Space Science Research Missions: Proceedings of a Workshop.

Ebook 12 Jun 1997
ISBN: 9780309569224
Dewey: 520.072
Licence From
£32.40
Special order line: only available to educational & business accounts. Sign In
Image for Engineering Technology Education.

Engineering Technology Education.

Ebook 1 Jan 1985
ISBN: 9780309569439
Licence From
£28.80
Special order line: only available to educational & business accounts. Sign In
Image for Competitiveness of the U.S. minerals and metals industry

Competitiveness of the U.S. minerals and metals industry

Ebook 1 Jan 1990
ISBN: 9780309571975
Dewey: 338.20973
Licence From
£21.60
Special order line: only available to educational & business accounts. Sign In
Image for The Eruption of Nevado del Ruiz volcano, Colombia, South America, November 13, 1985

The Eruption of Nevado del Ruiz volcano, Colombia, South America, November 13, 1985

series Natural Disaster Studies
Ebook 1 Jan 1991
ISBN: 9780309572279
Dewey: 363.3495
Licence From
£21.60
Special order line: only available to educational & business accounts. Sign In
Image for Commercialization of new materials for a global economy

Commercialization of new materials for a global economy

Ebook 1 Jan 1993
ISBN: 9780309572781
Licence From
£23.40
Special order line: only available to educational & business accounts. Sign In
Image for The Role of public agencies in fostering new technology and innovation in building

The Role of public agencies in fostering new technology and innovation in building

series Studies in Management of Building Technology
Ebook 1 Jan 1992
ISBN: 9780309572903
Licence From
£25.80
Special order line: only available to educational & business accounts. Sign In
Image for Breaking the mold: forging a common defense manufacturing vision

Breaking the mold: forging a common defense manufacturing vision

Ebook 1 Jan 1993
ISBN: 9780309572996
Licence From
£22.20
Special order line: only available to educational & business accounts. Sign In
Image for The Fourth Dimension in Building: Strategies for Avoiding Obsolescence.

The Fourth Dimension in Building: Strategies for Avoiding Obsolescence.

Ebook 1 Jan 1993
ISBN: 9780309573023
Dewey: 690
Licence From
£25.80
Special order line: only available to educational & business accounts. Sign In
Image for Materials research agenda for the automotive and aircraft industries: report

Materials research agenda for the automotive and aircraft industries: report - 468

series Nmab
Ebook 1 Jan 1993
ISBN: 9780309573115
Licence From
£23.40
Special order line: only available to educational & business accounts. Sign In
Image for Recommendations for the disposal of chemical agents and munitions

Recommendations for the disposal of chemical agents and munitions

Ebook 1 Jan 1994
ISBN: 9780309573177
Dewey: 355.82450973
Licence From
£31.80
Special order line: only available to educational & business accounts. Sign In
Image for Safety in the underground construction and operation of the Exploratory Studies Facility at Yucca Mountain: proceedings of a symposium held at Yucca Mountain and Las Vegas, Nevada, November 30-December 1, 1993

Safety in the underground construction and operation of the Exploratory Studies Facility at Yucca Mountain: proceedings of a symposium held at Yucca Mountain and Las Vegas, Nevada, November 30-December 1, 1993

Ebook 7 Apr 1995
ISBN: 9780309573474
Dewey: 363.11962419097
Licence From
£31.80
Special order line: only available to educational & business accounts. Sign In
Add to basket
Prev
12
Next
Browns Books Logo Footer +44 (0) 1482 384660

Our Services

Policies

Help & Contact

Browns Books © 2014-2024 All rights reserved [rev: 1.3.52.43]