基于两阶段SFA模型的中国医药企业技术创新效率研究

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1001-8409|30|5|54-58

ISSN: 1001-8409

Source: 软科学, Vol.30, Iss.5, 2016-01, pp. : 54-58

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Abstract