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Highway Research Board Bulletin, Issue 39, 19p
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Highway Research Board Proceedings, Volume 30
Highway Research Board Bulletin, Issue 14, pp 12-17
Highway Research Board Bulletin, Issue 12
Highway Research Board Proceedings, Volume 27
Highway Research Board Bulletin, Issue 6, pp 14-33
Highway Research Board Research Reports, Issue 3B, 15p
Highway Research Board Proceedings, Volume 24
Highway Research Board Roadside Development Committee Reports
Highway Research Board Proceedings, Volume 23
Highway Research Board Proceedings, Volume 21
Highway Research Board Proceedings, Volume 20
Highway Research Board Proceedings, Volume 19
Highway Research Board Proceedings, Volume 18
Highway Research Board Proceedings, Volume 17
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