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Highway Research Board Bulletin, Issue 37, pp 1-37
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Highway Research Board Proceedings, Volume 30
Highway Research Board Proceedings, Volume 29
Highway Research Board Bulletin, Issue 20
Highway Research Abstracts
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Highway Research Board Research Reports, Issue 7B, 3p
Highway Research Board Proceedings, Volume 28
Highway Research Board Roadside Development Committee Reports
Highway Research Board Bulletin, Issue 14, pp 12-17
Highway Research Board Proceedings, Volume 27
Highway Research Board Proceedings, Volume 26
Highway Research Board Current Road Problems, Issue 12
Highway Research Board Proceedings, Volume 25
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