China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111405 隴右節度使 陇右节度使 Longyou Jiedushi 防镇 防鎮 fang zhen defense command 717 4 761 4 POINT point N 36.48724 E 102.39441 唐 Tang CHGIS