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Annual Report on the Geological Survey of the State of Pennsylvania

Geological Survey of PennsylvaniaPennsylvania. Board of Commissioners for the Second Geological Survey

出版	Board of Commissioners, 1887
URL	http://books.google.com.hk/books?id=YHwMAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

Includes 3 atlases of fold. plates, fold. maps, fold. tab. which accompany 1885; 1886, pts. 3-4.