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1by Prosser, L. J. (Leonard J.)“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1981
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2“...Report of investigations (United States. Bureau of Mines) ;...”
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3“...Report of investigations (United States. Bureau of Mines) ;...”
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4by Miller, Virgil“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1942
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5“...Report of investigations (United States. Bureau of Mines) ;...”
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6by Jackson, Chas. F. (Charles F.)“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1941
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7by Wade, Gustav, 1885-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1942
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8“...Report of investigations (United States. Bureau of Mines) ;...”
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9“...Report of investigations (United States. Bureau of Mines) ;...”
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10“...Report of investigations (United States. Bureau of Mines) ;...”
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11by Jackson, Charles Freeman, 1886-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1942
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12by Huff, Wilbert J. (Wilbert James), 1890-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1942
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13“...Report of investigations (United States. Bureau of Mines) ;...”
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14“...Report of investigations (United States. Bureau of Mines) ;...”
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15by Johnson, John A. (John Albert), 1896-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1943
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16by Parry, V. F. (Vernon Frank), 1899-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1943
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17Published 1943“...Report of investigations (United States. Bureau of Mines) ;...”
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18by Holtz, John C., Berger, L. B. (Lawrence Bursley), 1898-1968, Elliott, M. A. (Mark Andrew), Schrenk, H. H. (Helmuth Herman), 1902-“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1943
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19“...Report of investigations (United States. Bureau of Mines) ;...”
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20by Schmidt, L. D. (Lawrence Delos), 1901-, Schroeder, W. C. (Wilburn Carroll), 1906-, Fieldner, Arno Carl, 1881-1966“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1943
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