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Geologic Conditions Affecting Coal Mine Ground Control in the Western United States
Gary P. Sames
Robert B. Laird
出版
U.S. Department of the Interior, Bureau of Mines
, 1988
URL
http://books.google.com.hk/books?id=lCN5QD2e65gC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
