TY - GEOGRAPHICAL RESEARCH A1 - LIANG Jin-she T1 - Nine principles in economic geography Y1 - 2008-01-25 00:00:00.0 JF - GEOGRAPHICAL RESEARCH JO - GEOGRAPHICAL RESEARCH SP - 75 EP - 84 VL - 27 IS - 1 UR - {https://www.dlyj.ac.cn/EN/10.11821/yj2008010008} N1 - 10.11821/yj2008010008 ER -