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Journal of Agrotechnical Economics
1000-6370
1997 Issue 1
bei jing nai niu ye de li run lv he xiao lv fen xi : yi ge dea fang fa de ying yong
wang de xiang
..............
page:33-36
wo guo nong ye ke ji jin bu gong xian lv ce suan fang fa de yi jian
zhu xi gang
..............
page:17-23