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Highway Research Board Bulletin, Issue 49
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Highway Research Board Bulletin, Issue 52
Highway Research Board Roadside Development Committee Reports
Highway Research Board Proceedings, Volume 31
Highway Research Board Special Report, Issue 2
Highway Research Board Research Reports, Issue 11B, 19p
Highway Research Board Proceedings, Volume 29
Highway Research Board Proceedings, Volume 28
Highway Research Board Bulletin, Issue 14
Highway Research Board Bulletin, Issue 14, pp 1-11
Highway Research Board Proceedings, Volume 27
Highway Research Board Proceedings, Volume 25
Highway Research Board Proceedings, Volume 24
Highway Research Board Proceedings, Volume 23
Highway Research Board Proceedings, Volume 23, pp 497-529
Highway Research Board Proceedings, Volume 21
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