“营改增”与企业创新型无形资产投资——基于信息技术服务业上市公司的双重差分研究

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1673-1573|volume|3|81-83

ISSN: 1673-1573

Source: 河北经贸大学学报:综合版, Vol.volume, Iss.3, 2015-01, pp. : 81-83

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Abstract