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Geological Survey Bulletin

Elmer S. SantosHarald DrewesWendell A. DuffieldRobert B. HallRobert D. WeldinRobert C. Weisner

出版	U.S. Government Printing Office, 1949
URL	http://books.google.com.hk/books?id=4PFRAQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

An evaluation of the mineral potential of the area.