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Highway Research Board Bulletin, Issue 90, 37p
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Highway Research Board Bulletin, Issue 93
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Highway Research Board Bulletin, Issue 90
Highway Research Board Special Report, Issue 19, 13 p.
Highway Research Board Proceedings, Volume 33
Highway Research Board Research Reports, Issue 16B, 28p
Highway Research Board Research Reports, Issue 16B, 11p
Highway Research Board Roadside Development Committee Reports
Highway Research Board Bulletin, Issue 71, pp 99-120
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