TY - Historical Geography Research A1 - Li Zhende, Zhang Ping T1 - Changes of the Distribution Pattern of the Xining-Lhasa Road (Qinghai Section) from the Qing Dynasty to the Republic of China: Analysis Based on Digitized Ancient Maps Y1 - 2020-08-14 00:00:00.0 JF - Historical Geography Research JO - Historical Geography Research SP - 120 EP - 132 VL - 40 IS - 2 UR - {https://www.lsdlyj.com.cn/EN/Y2020/V40/I2/120} N1 - ER -