1980. United States. Soil Conservation Service. Shows land use.; "November 1980."; Accompanied by: Fact sheet.; Includes location map. 79 x 87 centimeters Scale 1:100,000. The Service (Bozeman, Mont.?).
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1980. United States. Soil Conservation Service. Shows land use.; "December 1980."; Accompanied by: Fact sheet.; Includes location map. 111 x 98 centimeters Scale 1:100,000. The Service (Bozeman, Mont.?).
1980. United States. Soil Conservation Service. Shows land use.; Accompanied by: Fact sheet.; Includes location map. 56 x 43 centimeters Scale 1:100,000. USDA-SCS (Portland, Or.).
1980. United States. Soil Conservation Service. Shows land use.; June 1980.; Accompanied by: Fact sheet.; Includes location map. 122 x 102 centimeters Scale 1:100,000. 1 cm. to 1 km. The Service (Bozeman, Mont.?).