引力模型下中美进出口贸易影响因素的探究
Publisher： 国家哲学社会科学学术期刊数据库
E-ISSN： 1672-2949|volume|13|37-38
ISSN： 1672-2949
Source： 时代经贸, Vol.volume, Iss.13, 2017-01, pp. : 37-38
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Abstract