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Highway Research Board Special Report, Issue 19, 13 p.
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Highway Research Board Proceedings, Volume 29
Highway Research Board Bulletin, Issue 14, pp 12-17
Highway Research Board Proceedings, Volume 26
Highway Research Board Current Road Problems, Issue 12
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Highway Research Board Proceedings, Volume 25
Highway Research Board Proceedings, Volume 23
Highway Research Board Wartime Road Problems, Issue 5, 27p
Highway Research Board Proceedings, Volume 22
Highway Research Board Proceedings, Volume 21
Highway Research Board Proceedings, Volume 18
Highway Research Board Proceedings, Volume 7
Highway Research Abstracts
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