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Journal of Hebei University of Economics and Trade
1007-2101
1999 Issue 1
guan yu nong ye jing ji zeng chang fang shi zhuan bian de ce ping zhi biao ti xi
li lin jie
..............
page:87-92
dui qi ye xing zhi yan jiu de yi ge zong jie xing zuo shi
ding dong hong
..............
page:1-7
