Washability examinations of Colorado coals /
by Albert W. Deurbrouck.

APA Citation

Deurbrouck, A. W., United States. Bureau of Mines. (1970). Washability examinations of Colorado coals. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines.

MLA Citation

Deurbrouck, A. W, and United States. Bureau of Mines. Washability Examinations of Colorado Coals. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines, 1970.

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