TY - Historical Geography Research A1 - T1 - Y1 - 2020-10-31 00:00:00.0 JF - Historical Geography Research JO - Historical Geography Research SP - 114 EP - 131 VL - 40 IS - 3 UR - {https://www.lsdlyj.com.cn/EN/Y2020/V40/I3/114} N1 - ER -