@article{25334,
      author       = "Institut Géographique National and Symposium technique S
                      24 p, Edinburgh - Aout 1964, Association Cartographique
                      Internationale ICA",
      title        = "Projet de normalisation de symboles de cartes thématiques
                      Proposal for standardization of symbols on thematic maps  ",
      year         = "1964",
      note         = "1 brož.",
}