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Google圖書搜尋
The Mineralogy and Geology of the Taconites and Iron Ores of the Mesabi Range, Minnesota
John Walter Gruner
出版
Office of the commissioner of the Iron rage resources and rehabilitation
, 1946
URL
http://books.google.com.hk/books?id=9RRPEmOd1DUC&hl=&source=gbs_api