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nong ji gui mo jing ying shi shi xian nong ji fu wu zhuan ye hua she hui hua de you xiao tu jing
Pages: 26
Year: Issue:  7
Journal: Farm Machinery Using & Maintenance

Abstract: 通过农机规模经营必要性和可行性的论述,提出农机规模经营的方法和解决的问题.
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