@article{12529,
      author       = "Jessen, Niels V. and VIII. International Cartographic
                      Conference and VIII. Meždunarodnaja Kartografičeskaja
                      Konferencija and VIII. Conférence Cartographique
                      Internationale",
      title        = "Hydrogeological Mapping by Use of Cyclogram Technique.
                      Presentation of the Advance in Systematic Hydrological
                      Mapping Exemplified by the First Complet Mapping of a County
                      (Viborg)",
      year         = "1976",
      note         = "separát, 1 sešit",
}