Preparation characteristics of coal from Clarion County, Pa. /
by J.E. Zeilinger and A.W. Deurbrouck.
APA Citation
Zeilinger, J. E., Deurbrouck, A. W., United States. Bureau of Mines. (1968). Preparation characteristics of coal from Clarion County, Pa.. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Zeilinger, John E, A. W Deurbrouck, and United States. Bureau of Mines. Preparation Characteristics of Coal From Clarion County, Pa.. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1968.
Warning: These citations may not always be complete (especially for serials).