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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 Bennington, K. O.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1978
Government Document Book -
5by Stuve, J. M.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1978
Government Document Book -
6by Stuve, J. M.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1980
Government Document Book -
7by Bennington, K. O.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1980
Government Document Book -
8Published 1980“...Report of investigations (United States. Bureau of Mines) ;...”
Government Document Book -
9by Stuve, J. M.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1982
Government Document Book -
10by Stuve, J. M.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1985
Government Document Book