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Carbonizing Properties of Letcher County, Ky., Coals
George W. Birge
David E. Wolfson
James H. Lynch
出版
U.S. Department of the Interior, Bureau of Mines
, 1964
URL
http://books.google.com.hk/books?id=2E6Dmz-3V9sC&hl=&source=gbs_api
EBook
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