Use of char to improve physical quality of coke from Allen (Colorado) coal /
by Charles C. Boley ... [et al.].

APA Citation

Boteler, D. C., Porter, R. B., Fegley, M. M., Boley, C. C., United States. Bureau of Mines. (1972). Use of char to improve physical quality of coke from Allen (Colorado) coal. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines.

MLA Citation

United States. Bureau of Mines, et al.. Use of Char to Improve Physical Quality of Coke From Allen (Colorado) Coal. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines, 1972.