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Lake Superior Iron Resources
L.F. Heisig
其他書名
Reexamination of Nonmagnetic Taconite Occurrences in the Hibbing, Minn., Area by Flotation, Magnetic Separation, and Petrographic Methods
出版1967
URLhttp://books.google.com.hk/books?id=j7g0mwEACAAJ&hl=&source=gbs_api