Leakage across a bituminous coal mine barrier /
by Noel N. Moebs and Gary P. Sames.
- Washington, D.C. : U.S. Dept. of Interior, Bureau of Mines, 1989.
- 18 p. : ill. ; 28 cm.
- Report of investigations ; 9280 .
- Report of investigations (United States. Bureau of Mines) ; 9280. .