›› 1992, Vol. 35 ›› Issue (2): 244-246.doi:

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(Rescarch Institute of Epidemic Diseases of Yunna.Province, Xiaguan 671000)

Kuang Hai-yuan1, Hong Xiao-yue1, Huang Liang wei2   

  1. 1. Nanjing, Agricultural University, Nanjing 210014;
    2. Guangxi Agricultural College, Nanning 530005
  • Online:1992-04-15 Published:1992-04-15