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Highway Research Record, Issue 173, pp 55-62
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Highway Research Record, Issue 171, pp 1-13
Highway Research Record, Issue 136, pp 31-41
Highway Research Record, Issue 136, pp 42-58
Highway Research Record, Issue 136, pp 59-77
Highway Research Record, Issue 136, pp 1-6
Highway Research Board Bulletin, Issue 132, 4p
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