R&D data record the concentration of different industries in different years.
收藏Figshare2022-04-06 更新2026-04-28 收录
下载链接：
https://figshare.com/articles/dataset/R_D_data_record_the_concentration_of_different_industries_in_different_years_/19527717
下载链接
链接失效反馈官方服务：
资源简介：
The raw data is from NBER patent project. (DTA)
创建时间：
2022-04-06
