低毒生物农药在苹果树上的试验示范与经济效益分析

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1003-1650|volume|12|136-137

ISSN: 1003-1650

Source: 农民致富之友, Vol.volume, Iss.12, 2016-01, pp. : 136-137

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Abstract