研发和广告支出与企业系统性风险实证研究
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1006-3544|volume|1|38-42
ISSN: 1006-3544
Source: 金融理论探索, Vol.volume, Iss.1, 2015-01, pp. : 38-42
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Abstract