Von Alexrk2 – Eigenes WerkAdministrative boundaries from http://opendata.bonn.de/Topography DLM 250 (© GeoBasis-DE / BKG 2015), CC BY-SA 3.0, Link
Von Alexrk2 – Eigenes WerkAdministrative boundaries from http://opendata.bonn.de/Topography DLM 250 (© GeoBasis-DE / BKG 2015), CC BY-SA 3.0, Link