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The Fusibility of Coal Ash and the Determination of the Softening Temperature

Arno Carl FieldnerAlbert E. HallAlexander Littlejohn Feild

出版	U.S. Government Printing Office, 1918
URL	http://books.google.com.hk/books?id=5c8-AQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN