全国地级市旧海关DID数据 1842-1949年
本数据以Jin和Schulze(2025)《The long-term effect of western customs institution on firm innovation in China》的研究框架为参考,构建全国地级市旧海...
本数据以Jin和Schulze(2025)《The long-term effect of western customs institution on firm innovation in China》的研究框架为参考,构建全国地级市旧海...