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Guidelines for Identifying, Evaluating and Registering Historic Mining Properties

出版	U.S. Department of the Interior, National Park Service, Interagency Resources Division, National Register of Historic Places, 1992
URL	http://books.google.com.hk/books?id=JJ1EB_3_mT8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN