China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_82688 湼陽縣 湼阳县 Nieyang Xian 县 縣 xian county -207 4 -108 4 POINT point N 32.84987 E 112.28262 FROM_AC 南阳郡 Nanyang Jun 南阳郡 Nanyang Jun 南阳郡 Nanyang Jun CHGIS