@article{13567,
      author       = "International Symposium Satellite and Terrestial
                      Triangulation, Graz, Austria, May 29. - 31, 1972, I.A.G.,
                      Part I",
      title        = "International Symposium Satellite and Terrestial
                      Triangulation. Graz, Austria. Part I: Sessions of the West
                      European Sub - Commission of the International Commission
                      for Artificial Satellites, I.A.G., May 29. - 31, 1972  ",
      year         = "1972",
      note         = "1 brož.",
}