1981. United States. Soil Conservation Service. Shows land use.; "January 1981."; Accompanied by: Fact sheet.; Includes location map. 112 x 92 centimeters Scale 1:100,000. The Service (Bozeman, Mont.?).
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1981. United States. Soil Conservation Service. Shows land use.; Relief shown by hachures and spot heights.; "July 1981."; Accompanied by: Fact sheet.; Includes location map. 92 x 88 centimeters ... The Service (Bozeman, Mont.?).