YANG Ruidong ),ZHU Lijun ),WANG Shijie ),JIANG Lijun ),ZHANG Weihua ),GAO Hui ) ) Guizhou University of Technology, Guiyang, ) The state Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, the Chinese Academy of Sci.2005. Negative Carbon Isotope Excursion in the Base Cambrian of Guizhou Province, China: Implication for Biological and Stratigraphical Significance[J]. Acta Geologica Sinica,79(2):157-164
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