China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 http://tgaz.fudan.edu.cn/tgaz/placename/hvd_116044 延安府 延安府 Yan'anfu 府 府 fu superior prefecture 960 3 1911 3 POINT point N 36.59181 E 109.46991 保安县 Baoan Xian 安塞县 Ansai Xian 安定县 Anding Xian 定边县 Dingbian Xian 宜君县 Yi Jun Xian 清涧县 Qingjian Xian 甘泉县 Ganquan Xian 甘泉县 Ganquan Xian 肤施县 Fushi Xian 葭县 Jia Xian 靖边县 Jingbian Xian CHGIS