China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111807 綿州防禦使 绵州防御使 Mianzhou Fangyushi 防镇 防鎮 fang zhen defense command 882 3 964 3 POINT point N 31.46428 E 104.76760 唐 Tang 五代前蜀 Wudaiqianshu 后唐 Houtang 五代后蜀 Wudaihoushu CHGIS