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地震
华北地区强震前地磁短期异常特征研究
田山, 吴国有, 关华平, 刘允秀
Research on short-term abnormal characteristics of geomagnetism before the strong earthquakes in North China region
TIAN Shan, WU Guo-you, GUAN Hua-ping, LIU Yun-xiu
地震 . 2004, (2): 97 -102 .