Top 5 cities, cross-city cooperation, based on common patent data of the Beijing-Tianjin-Hebei Urban agglomeration, 2008–2016.
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资源简介：
Top 5 cities, cross-city cooperation, based on common patent data of the Beijing-Tianjin-Hebei Urban agglomeration, 2008–2016.
创建时间：
2023-01-04
