American Standard Recommended Practice For Drainage of Coal Mines (M6.1-1955, UDC 622.5). (Revision of American Recommended Practice For Drainage of Coal Mines, M6-1931.).

American Standard Recommended Practice For Drainage of Coal Mines (M6.1-1955, UDC 622.5). (Revision of American Recommended Practice For Drainage of Coal Mines, M6-1931.).
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Total Pages : 17
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ISBN-10 : OCLC:631670176
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Synopsis American Standard Recommended Practice For Drainage of Coal Mines (M6.1-1955, UDC 622.5). (Revision of American Recommended Practice For Drainage of Coal Mines, M6-1931.). by : United States. Bureau of Mines