外贸企业转型升级的影响因素研究——以天津为例

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1671-1106|volume|1|65-70

ISSN: 1671-1106

Source: 天津师范大学学报:社会科学版, Vol.volume, Iss.1, 2015-01, pp. : 65-70

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Abstract