SK53 OSM: Kansas Residential Roads on OSM
SK53 OSM: Pittsburgh area: Residential Roads on OSM
SK53 OSM: port_erie_ua
SK53 OSM: ar_ba_urban2
SK53 OSM: pittsburgh_ua2
SK53 OSM: Urban areas derived from residential roads, Willamette Valley, OR
SK53 OSM: Butler County, Pennsylvania : Urban Areas derived from OSM
SK53 OSM: Comparison of 2 Urban Area sourced for East Midlands
SK53 OSM: Urban areas Butler Co, Pennsylvania: another derivation technique
SK53 OSM: butler_co_urban_blocks
SK53 OSM: Pittsburgh Urban Areas :derived from OSM using the block method
SK53 OSM: Pittsburgh Urban Areas: block method
SK53 OSM: Pennsyvlania Urban Areas : block method
SK53 OSM: butler_co_urban_density1
SK53 OSM: butler_co_urban_density2
SK53 OSM: Butler Co, PA: derived Urban Areas
SK53 OSM: Residential Road density in Europe from OpenStreetMap
SK53 OSM: Europe 1000 largest urban areas