Longwall automation :
a ground control perspective /
by Jeffrey M. Listak and Deno M. Pappas.
APA Citation
Listak, J. M., Pappas, D. M. (1990). Longwall automation: a ground control perspective. Phg [Pittsburgh], PA: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Listak, Jeffrey M, and Deno M Pappas. Longwall Automation: a Ground Control Perspective. Phg [Pittsburgh], PA: U.S. Dept. of the Interior, Bureau of Mines, 1990.
Warning: These citations may not always be complete (especially for serials).