Methane control by isolation of a major coal panel :
Pittsburgh coalbed /
by Charles Findlay, Stephen Krickovic, and J.E. Carpetta.

APA Citation

Findlay, C., Carpetta, J. E. (John E.)., Krickovic, S., Pittsburgh Mining and Safety Research Center., Eastern Associated Coal Corp., United States. Bureau of Mines. (1973). Methane control by isolation of a major coal panel: Pittsburgh coalbed. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines.

MLA Citation

United States. Bureau of Mines, et al.. Methane Control by Isolation of a Major Coal Panel: Pittsburgh Coalbed. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines, 1973.