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Petrographic, Chemical and Spectroscopic Studies of Carbonaceous Matter in the Witwatersrand Basin, South Africa

出版	University of the Witwatersrand, Economic Geology Research Unit, 1997
ISBN	18683819009781868381906
URL	http://books.google.com.hk/books?id=j05RAQAAIAAJ&hl=&source=gbs_api