美国奶牛收入保险的产生、发展及运作特点

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1002-4433|volume|5|29-33

ISSN: 1002-4433

Source: 世界农业, Vol.volume, Iss.5, 2017-01, pp. : 29-33

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Abstract