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Highway Research Board Proceedings, Volume 27
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Highway Research Abstracts
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Highway Research Board Bulletin, Issue 5, 23p
Highway Research Board Proceedings, Volume 26
Highway Research Board Current Road Problems, Issue 12
Highway Research Board Proceedings, Volume 24
Highway Research Board Proceedings, Volume 23
Highway Research Board Proceedings, Volume 22
Highway Research Board Proceedings, Volume 21
Highway Research Board Proceedings, Volume 20
Highway Research Board Proceedings, Volume 19
Rural Traffic Problems
Highway Research Board Proceedings, Volume 18
Highway Research Board Proceedings
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