@article{4532,
      author       = "Sen Gupta, A.K. and VIII. International Cartographic
                      Conference and VIII. Meždunarodnaja Kartografičeskaja
                      Konferencija and VIII. Conférence Cartographique
                      Internationale",
      title        = "Considerations for Changig the Design of our Basic
                      Topographic Maps on 1 : 50 000 Scale",
      year         = "1976",
      note         = "separát, 1 sešit",
}