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A Cost Comparison of Selected U.S. and Indonesian Coal Mines
Erik Sherer
出版
U.S. Department of Interior, Bureau of Mines, Division of Resources Evaluation, Minerals Availability Field Office
, 1994
URL
http://books.google.com.hk/books?id=DLyGpp5RLc0C&hl=&source=gbs_api
EBook
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