@book{9783732906659,
  title = {Maps in the Service of the Nation},
  author = {Gábor Demeter,Zsolt Bottlik},
  publisher = {Frank \& Timme},
  year = {2021},
  edition = {1},
  series = {DigiOst},
  volume = {12},
  url = {https://www.frank-timme.de/de/programm/produkt/maps\_in\_the\_service\_of\_the\_nation}
}