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Graphite in Texas

Charles Laurence BakerGlen L. EvansVirgil Everett BarnesClyde P. RossDonald W. KohlsEdwin Butt EckelElias Howard SellardsElvin M. HurlbutF.B. PlummerFrederick Byron PlummerHenryk Bronislaw StenzelLeonard Franklin BrownRobert C. Redfield

出版	University of Texas, Bureau of Economic Geology, 1930
URL	http://books.google.com.hk/books?id=phxsXxAAIusC&hl=&source=gbs_api