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Gold Mining and Milling in the United States and Canada
Albert E. Keller
Charles Freeman Jackson
Clifford Cook Furnas
George Randolph Hopkins
Harold Putnam Greenwald
Hewitt Wilson
Percy Nicholls
United States. Bureau of Mines
William Waugh Adams
John Ballantine Knaebel
L. E. Geyer
L. Chenoweth
其他書名
Current Practices and Costs
出版
U.S. Government Printing Office
, 1933
URL
http://books.google.com.hk/books?id=miKnvAEACAAJ&hl=&source=gbs_api
