An Analysis of the minerals situation in the United States :
1989-2040 : a technical document supporting the 1989 USDA Forest Service RPA assessment.
Fort Collins, Colo. : U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1989.
Forests and forestry
Forests and forestry /
Mineral resources conservation > Mineral resources conservation / United States.
Mines and mineral resources > Mines and mineral resources / United States.
iv, 38 p. :
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