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0200022927 20030630145719.0 030630t2000 couak fr |00||||eng (pbk.) : CNY267.00 NGL f-lb--- a336 Rosenblum, Sam. 利比里亚重矿物研究的方法和初步结果. chi Methods and preliminary results of heavy-mineral studies in Liberia / by Sam Rosenblum and G.W. Leo. Denver, Colorado : U.S. Geological Survey, 2000. various pagings : ill. ; 28 cm. Open-File Rrport / U.S. Geological Survey ; 00-259 Heavy mineral Studies Liberia. aLeo, G.W. aCN bNGL NGL EB00063621 r¥267.00 336 R72 ayl b1 eyll0305