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Performer: Geological Survey, Reston, VA. Performer: Colorado State Dept. of Highways, Denver. Performer: Arizona Dept. of Transportation, Phoenix. Performer: California State Dept. of Transportation, Sacramento. Performer: Idaho Transportation Dept., Boise.
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See also PB92-125848. Library of Congress catalog card no. 95-12385. Prepared in cooperation with Colorado State Dept. of Highways, Denver., Arizona Dept. of Transportation, Phoenix., California State Dept. of Transportation, Sacramento. and Idaho Transportation Dept., Boise.
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