TY - Historical Geography Research A1 - Han Zhoujing T1 - Spatial-Temporal Distribution and Transformation Characteristics of Administrative Divisions in the 19th Century Vietnam Y1 - 2022-07-08 00:00:00.0 JF - Historical Geography Research JO - Historical Geography Research SP - 63 EP - 72 VL - 42 IS - 1 UR - {https://www.lsdlyj.com.cn/EN/Y2022/V42/I1/63} N1 - ER -