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Classification and Tabling of Table Middlings at the Colta Coal Washery, Flat Creek, Ala
Bennie William Gandrud
Glen Dale Coe
H. J. Hager
出版
U.S. Department of the Interior, Bureau of Mines
, 1939
URL
http://books.google.com.hk/books?id=MAcbam4YcfwC&hl=&source=gbs_api
EBook
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