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1Published 1978Subjects: “...Natural resources Colorado....”
Book -
2Published 1978Subjects: “...Natural resources Rio Grande....”
Book -
3Published 1972Subjects: “...Natural resources Dolores River Watershed (Colo. and Utah)...”
Government Document Book -
4Published 1974Subjects: “...Natural resources San Juan River Watershed (Colo.-Utah)...”
Government Document Book