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Highway Research Board Proceedings, Volume 39, p. 120-156
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Highway Research Board Bulletin, Issue 301, 136p
Highway Research Board Roadside Development Committee Reports
Highway Research Board Proceedings, Volume 39
Highway Research Board Special Report, Issue 56
Highway Research Abstracts
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Highway Research Board Bulletin, Issue 232, 48p
Highway Research Board Bulletin, Issue 232, 22p
Highway Research Board Bulletin, Issue 208, 13p
Highway Research Board Proceedings, Volume 38, 679p
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