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1“...Report of investigations (United States. Bureau of Mines) ;...”
Government Document Book -
2“...Report of investigations (United States. Bureau of Mines) ;...”
Government Document Book -
3“...Report of investigations (United States. Bureau of Mines) ;...”
Government Document Book -
4by Biordi, Joan C.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1978
Government Document Book -
5by Papp, John F.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1981
Government Document Book -
6by Perzak, F. J. (Frank J.)“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1985
Government Document Book -
7by Smith, Alex C.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1987
Government Document Book -
8by Perzak, F. J. (Frank J.)“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1987
Government Document Book -
9by Litton, C. D. (Charles D.)“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1991
Government Document Book -
10by Smith, Alex C.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1991
Government Document Book