负债水平对企业R&D投资的影响——基于中国上市公司的实证研究

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 2095-3283|volume|9|147-150

ISSN: 2095-3283

Source: 对外经贸, Vol.volume, Iss.9, 2016-01, pp. : 147-150

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Abstract