China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 http://tgaz.fudan.edu.cn/tgaz/placename/hvd_111179 淮陽郡 淮阳郡 Huaiyang Jun 郡 郡 jun commandery 742 4 755 4 POINT point N 33.73398 E 114.88245 河南省淮阳县 唐 Tang 南顿县 Nandun Xian 南顿县 Nandun Xian 太康县 Taikang Xian 太康县 Taikang Xian 宛丘县 Wanqiu Xian 溵水县 Yinshui Xian 溵水县 Yinshui Xian 西华县 Xihua Xian 西华县 Xihua Xian 项城县 Xiangcheng Xia 项城县 Xiangcheng Xia CHGIS