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Basic Estimated Capital Investment and Operating Costs for Underground Bituminous Coal Mines
Sidney KatellE. L. HemingwayL. H. Berkshire
其他書名
Mines with Annual Production of 1.06 to 4.99 Million Tons from a 72-inch Coalbed
出版Bureau of Mines, 1975
URLhttp://books.google.com.hk/books?id=SFOvuNXxIBIC&hl=&source=gbs_api
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