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Report of Investigations

Anthony J. StrazisarD. E. WolfsonDonald E. KirbyE. M. MurphyEdward George DavisFrederick W. LeightonJames W. VoghR. A. WelshRobert C. EllmanR. V. HigginsA. W. DeurbrouckD. A. O'KeefeIgnatz L. FeldJ. O. CrabtreeLeroy DockterRichard Lincoln SteinWilbur I. DuvallAlan J. LeightonJohn W. BelterThomas A. SullivanThomas F. Tomb

其他書名	no.7381 to date
出版	U.S. Department of Interior, Bureau of Mines, 1972
URL	http://books.google.com.hk/books?id=UXo9WSrIt6gC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN