Creating a safer environment in U.S. coal mines : the Bureau of Mines methane control program, 1964-79 / by Milford L. Skow, Ann G. Kim, and Maurice Deul. (A Bureau of Mines impact report)
Creating a safer environment in U.S. coal mines : the Bureau of Mines methane control program, 1964-79 / by Milford L. Skow, Ann G. Kim, and Maurice Deul.