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The Silurian System, Founded on Geological Researches in the Counties of Salop, Hereford, Radnor (etc.)

Roderick Impey Murchison

出版	Murray, 1839
URL	http://books.google.com.hk/books?id=lRBfAAAAcAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN