2
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1
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3
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United States. Bureau of Public Roads -- History. / https://id.loc.gov/authorities/names/n79042046 https://id.loc.gov/authorities/subjects/sh99005024 : Seely, Bruce Edsall,
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1987
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1
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4
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United States. Bureau of Public Roads. National Cooperative Highway Research Program -- See National Cooperative Highway Research Program
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1
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5
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1
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6
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1
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