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Highway Research Record, Issue 112, pp 106-119
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Highway Research Record, Issue 60, pp 15-27
Highway Research Record, Issue 61, pp 19-35
Highway Research Record, Issue 40, pp 4-5
Highway Research Record, Issue 40, pp 37-40
Highway Research Board Bulletin, Issue 323
Highway Research Board Bulletin, Issue 348, pp 1-17
Highway Research Board Special Report, Issue 73
Highway Research Board Proceedings, Volume 39
Highway Research Board Bulletin, Issue 187, 77p
Highway Research Board Bulletin, Issue 187, 52p
Highway Research Board Bulletin, Issue 187, 5p
Highway Research Board Bulletin, Issue 187, 3p
Highway Research Board Bulletin, Issue 187, 4p
Highway Research Board Research Reports, Issue 18C, 2p
Highway Research Board Proceedings, Volume 36
Highway Research Board Bulletin, Issue 138, 10p
Highway Research Board Bulletin, Issue 111, 13p
Highway Research Board Proceedings, Volume 34
Highway Research Board Bulletin, Issue 52
Highway Research Board Special Report, Issue 2
Highway Research Board Proceedings, Volume 30
Highway Research Board Proceedings, Volume 29
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