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121 p.
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45 p.
106 p.
NCHRP Research Results Digest, Issue 197, 9 p.
103 p.
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201 p.
235 p.
309 p.
116 p.
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104 p.
273 p.
15 p.
TR News, Issue 170, p. 5-9
TR News, Issue 170, p. 3-4
Transportation Research Record, Issue 1469, 49p
Transportation Research Record, Issue 1431, 82p
Transportation Research Record, Issue 1455, 187p
63p
83p
Transportation Research Record, Issue 1469, p. 43-49
Transportation Research Record, Issue 1469, p. 26-33
Transportation Research Record, Issue 1460, p. 37-44
Transportation Research Record, Issue 1460, p. 87-93
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