A Study on the δ13C Values of Tree Rings and Their Indicative Functions in Revealing Atmospheric CO2 Changes in North China
Jiang Gaoming, Huang Yinxiao, Wan Guojiang, Chen Yiecai, Geng Longnian, Zeng Yiqiang, Wang Hongwei
Chin J Plan Ecolo . 1997, (2): 155 -160 . 

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