China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111626 涇原節度使 泾原节度使 Jingyuan Jiedushi 防镇 防鎮 fang zhen defense command 768 4 893 4 POINT point N 35.32881 E 107.36339 唐 Tang CHGIS