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1541“...Report of investigations (United States. Bureau of Mines) ;...”
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1542“...Report of investigations (United States. Bureau of Mines) ;...”
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1543by Rutledge, F. A.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1950
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1544“...Report of investigations (United States. Bureau of Mines) ;...”
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1545by Lorain, S. H.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1950
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1546by Burnett, E. S.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1950
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1547by Dowd, James J.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1950
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1548“...Report of investigations (United States. Bureau of Mines) ;...”
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1549by Wiebelt, Frank J.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1951
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1550“...Report of investigations (United States. Bureau of Mines) ;...”
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1551by Belser, Carl“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1951
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1552“...Report of investigations (United States. Bureau of Mines) ;...”
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1553by Blade, O. C. (Oscar Carl), 1902-1985“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1951
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1554by Wenger, W. J.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1957
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Government Document eBook -
1555“...Report of investigations (United States. Bureau of Mines) ;...”
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1556by Wilson, E. D.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1957
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Government Document eBook -
1557“...Report of investigations (United States. Bureau of Mines) ;...”
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Government Document eBook -
1558“...Report of investigations (United States. Bureau of Mines) ;...”
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1559“...Report of investigations (United States. Bureau of Mines) ;...”
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1560by Allen, Glenn L.“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1945
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Government Document eBook