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Directory of Washington Mining Operations, 1950

C. Phillips PurdeyMarshall T. HunttingCharles D. CampbellHoward E. BentaRobert H. StebbinsVaughn E. Livingston

出版	State of Washington, Department of Conservation, 1950
URL	http://books.google.com.hk/books?id=lGy8fUNLLW0C&hl=&source=gbs_api