@misc{UBHD-66964593, organization={Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap}, title={Coevorden}, publisher={Topografische Dienst}, address={'s-Gravenhage}, year={1938}, pages={1 Karte}, language={dut}, library={GG [Signatur: <GG> Wna-GUe]}, }