融资约束和R&D投资与企业创新效率的相关研究
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 2095-3151|volume|32|72-78
ISSN: 2095-3151
Source: 经济研究参考, Vol.volume, Iss.32, 2017-01, pp. : 72-78
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Abstract