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Highway Research Board Bulletin, Issue 38, pp 62-68
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Highway Research Board Bulletin, Issue 26, 127p
Highway Research Board Bulletin, Issue 24, 108p
Highway Research Board Bulletin, Issue 19
Highway Research Board Bulletin, Issue 15, pp 25-31
Highway Research Board Bulletin, Issue 11, pp 30-36
Highway Research Board Bulletin, Issue 12, pp 57-64
Highway Research Board Bulletin, Issue 10, pp 26-31
Highway Research Board Proceedings, Volume 27
Highway Research Board Bulletin, Issue 2, 92p
Highway Research Board Proceedings, Volume 26
Highway Research Board Proceedings, Volume 25
Highway Research Board Proceedings, Volume 24
Highway Research Board Proceedings, Volume 21
Highway Research Board Proceedings, Volume 20
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Rural Traffic Problems
Highway Research Board Proceedings, Volume 13
Highway Research Board Proceedings, Volume 12
Highway Research Board Proceedings, Volume 10
Highway Research Board Proceedings, Volume 4
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