内外资效率门槛、异质性对企业自主创新的时空影响

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1002-4670|volume|2|113-124

ISSN: 1002-4670

Source: 国际贸易问题, Vol.volume, Iss.2, 2015-01, pp. : 113-124

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Abstract