China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_82837 洛陽縣 洛阳县 Luoyang Xian 县 縣 xian county 605 4 705 4 POINT point N 34.64981 E 112.42357 FROM_FD 豫州 Yu Zhou 河南郡 Henan Jun 河南郡 Henan Jun CHGIS