China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 http://tgaz.fudan.edu.cn/tgaz/placename/hgr_583 Серпейскъ SLOV_POLUNIN Серпейск SLOV_POLUNIN Serpeisk SLOV_POLUNIN город городъ gorod town 1785 4 1796 4 POINT point N 54.33583 E 34.98889 http://www.geonames.org/496543 Serpeysk, Kaluga Oblast, Russia Серпейский уезд Serpeiskii uezd HGR http://babel.hathitrust.org/cgi/pt?id=uc1.b4583201;view=1up;seq=104