@article{20346,
      author       = "International Union of Geodesy and Geophysics - XII General
                      Assembly Helsinki 25 July - 6 August 1960",
      title        = "Nivelaciones de Alta Precision y Precision  ",
      year         = "1960",
      note         = "1 sv., Republica Argentina. Informe Nacional presentado a
                      la Asociacion",
}