TY - GEOGRAPHICAL RESEARCH A1 - MA Guo-xia, XU Yong, TIAN Yu-jun T1 - Spatial analysis of economic growth convergence mechanism in Beijing-Tianjin-Hebei Metropolitan Region Y1 - 2007-05-25 00:00:00.0 JF - GEOGRAPHICAL RESEARCH JO - GEOGRAPHICAL RESEARCH SP - 590 EP - 598 VL - 26 IS - 3 UR - {https://www.dlyj.ac.cn/EN/10.11821/yj2007030020} N1 - 10.11821/yj2007030020 ER -