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Highway Research Board Proceedings, Volume 30
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Highway Research Board Bulletin, Issue 44, pp 1-10
Highway Research Board Roadside Development Committee Reports
Highway Research Abstracts, Volume 20, Issue 6, p. 17-27
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Highway Research Board Proceedings, Volume 29
Highway Research Board Bulletin, Issue 23
Highway Research Board Bulletin, Issue 23, pp 12-17
Highway Research Board Bulletin, Issue 23, pp 1-11
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