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Highway Research Board Proceedings, Volume 39
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Highway Research Board Special Report, Issue 56
Highway Research Abstracts
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Highway Research Board Roadside Development Committee Reports
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
Highway Research Board Bulletin, Issue 232, 123p
Highway Research Board Bulletin, Issue 228, 68p
Highway Research Board Bulletin, Issue 227, 88p
Highway Research Board Bulletin, Issue 207, 36p
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