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Google圖書搜尋
Test Drilling for Coal in 1982-83 in the Jefferson National Forest, Virginia
Frederick O. Simon
Kenneth John Englund
其他書名
Part 2, Analyses of Coal Cores from the Southwestern Virginia Coal Field
出版
U.S. Geological Survey
, 1983
URL
http://books.google.com.hk/books?id=Do91cgAACAAJ&hl=&source=gbs_api