@article{33777,
      author       = "Kelsey, J. and Edge, A. C. R. and Communication présentée
                      a l´onziéme assemblée générale de ĺ Union Géodésique
                      et Géophysique Internationale - Toronto, 3 - 14 septembre
                      1957",
      title        = "Trials of the Tellurometer Carried out Jointly by the
                      Ordnance Survey of Great Britain and the South African
                      Council for Scientific and Industrial Research  ",
      note         = "1 sv.",
}