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Journal of Gansu Agricultural University
1003-4315
1990 Issue 2
xing guo shi ban dian bing jun sheng wu xue xing zhuang de yan jiu
zhu jian lan
..............
page:165-169
guan mo tu de lin su xi fu te xing yu gong lin huan chong neng li de chu bu yan jiu
li shi qing
..............
page:184-190
