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中文
A Study on Mechanical Protective Tillage and Equiped Machinery in Dry and Semi dry Areas
Ma Damin， Wang Xiu， Ning Jizhou
ACTA AGRICULTURAE BOREALI-SINICA . 1998, (
3
): 58 -61 . DOI: 10.3321/j.issn:1000-7091.1998.03.011
