Northwest Colorado coal.

APA Citation

United States. Bureau of Land Management. Colorado State Office. (1976). Northwest Colorado coal. Denver, Colo.: Dept. of the Interior, Bureau of Land Management, [Colorado State Office].

MLA Citation

United States. Bureau of Land Management. Colorado State Office. Northwest Colorado Coal. Denver, Colo.: Dept. of the Interior, Bureau of Land Management, [Colorado State Office], 1976.

Warning: These citations may not always be complete (especially for serials).