WANG Yanbin ),LIU Dunyi ),YAO Jianxin ),JI Zhansheng ),WANG Liting ),WU Guichun ) ) Institute of Geology, Chinese Academy of Geological Sciences, Beijing, ) Bureau of Geological, Mineral Resources Survey of Guizhou Province, Guiyang,.2004. Age Derermination of the Lower--Middle Triassic Boundary at Ganheqiao, Wangmo, Guizhou Province[J]. Acta Geologica Sinica,78(5):586-
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