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Description of Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States: Additions and corrections of the first and second volumes with plates additional to atlas

Leo Lesquereux

出版	Board of Commissioners for the Second Geoglogical Survey, 1884
URL	http://books.google.com.hk/books?id=FnKmP-NreU8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN