中国三种类型专利密度分布时空差异研究
Three Types of Patent Density Distribution Variance Analysis on Provincial Level in China
Received date: 2016-05-17
Online published: 2016-11-10
曾鹏 , 赵聪 . 中国三种类型专利密度分布时空差异研究[J]. 科技进步与对策, 2016 , 33(21) : 117 -125 . DOI: 10.6049/kjjbydc.2016010580
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