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International System for Classifying Brown Coals and Lignites and Its Application to American Coals
William Harlan Ode
Francis Harold Gibson
出版
U.S. Department of the Interior, Bureau of Mines
, 1960
URL
http://books.google.com.hk/books?id=y6cieMT20xUC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
