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Highway Research Board Bulletin, Issue 261, 13p
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Highway Research Board Proceedings, Volume 39
Highway Research Board Bulletin, Issue 107
Highway Research Board Proceedings, Volume 29
Highway Research Board Proceedings, Volume 14, p. 123-130
Highway Research Board Proceedings, Volume 14
Highway Research Board Proceedings, Volume 10
Highway Research Board Proceedings, Volume 7
Highway Research Board Proceedings, Volume 6
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