@article{35027,
      author       = "Lappalainen, Veikko and XIII. Congress of the International
                      Society for Photogrammetry, Helsinki 1976. Commission VII",
      title        = "The Use of Aerial Photographs in the Planning of Protection
                      and Recreational Use of Waters  ",
      year         = "1976",
      note         = "Obr. - Mapy, separát, 1 sv.",
}