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Google圖書搜尋
Apparent Earth Conductivity Over Coal Mines as Estimated from Through-the-earth Electromagnetic Transmission Tests
John Durkin
出版
U.S. Department of the Interior, Bureau of Mines
, 1984
URL
http://books.google.com.hk/books?id=MNDTvAEACAAJ&hl=&source=gbs_api