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Economic Geology of Richmond, Virginia, and Vicinity, by N.H. Darton. [U.S. Geological Survey Bulletin 483.].
Nelson Horatio Darton
United States. Congress. House
出版
U.S. Government Printing Office
, 1911
URL
http://books.google.com.hk/books?id=EZt4QwAACAAJ&hl=&source=gbs_api