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Journal of Northwest Normal University(Natural Science)
1001-988X
1998 Issue 3
shi xiang zuo hui fa you cheng fen de yan jiu
zheng shang zhen
..............page:31-33
gao xiao xue bao xi tong qian yi
chen guang ren
..............page:69-74
bian ji si wei jie gou de you hua ji xie diao hu bu
sun xiao ling
..............page:63-68