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

Arno Carl FieldnerCharles JaninIra E. SproatUnited States. Bureau of MinesWalter Frank RittmanAlbert E. HallErnest Woodward DeanJoseph Wesley ThompsonAlexander Littlejohn Feild

出版	U.S. Government Printing Office, 1913
URL	http://books.google.com.hk/books?id=phjXwAEACAAJ&hl=&source=gbs_api