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Summary of Mining and Petroleum Laws of the World
Northcutt Ely
其他書名
Western Hemisphere
出版U.S. Department of the Interior, Bureau of Mines, 1970
URLhttp://books.google.com.hk/books?id=n6VQnDSMV4YC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN