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Highway Research Board Bulletin, Issue 256, 4p
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Highway Research Board Special Report, Issue 40
Highway Research Board Roadside Development Committee Reports
Highway Research Board Bulletin, Issue 108, pp 81-95
Highway Research Board Proceedings, Volume 22
Highway Research Board Proceedings, Volume 20
Highway Research Board Proceedings, Volume 19
Highway Research Board Proceedings, Volume 18
Highway Research Board Roadside Development Committee Reports, 20 p.
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