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Reports on the Combustible Qualities of the Semi-anthracites of the Trevorton Coal Fields, in the Shamokin Basin, Pennsylvania

Henry Darwin Rogers

出版	G.S. Roe, 1856
URL	http://books.google.com.hk/books?id=UaE6AQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN