京津冀区域医药产业专利合作网络结构及其对医药企业专利产出的影响
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1000-7695|volume|22|177-183
ISSN: 1000-7695
Source: 科技管理研究, Vol.volume, Iss.22, 2017-01, pp. : 177-183
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Abstract