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Tofty Tin Belt, Manley Hot Springs District, Alaska

Russell Gibson Wayland

出版	U.S. Government Printing Office, 1961
URL	http://books.google.com.hk/books?id=pnHSqE9LZvQC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

Occurrence and exploitation of cassiterite-bearing gold placer deposits.