@article{3796,
      author       = "Rumpf, Walter Ehrhart and IUGG XVIII General Assembly,
                      1983, Hamburg",
      title        = "Calibration of Compensator Levelling Instruments for
                      Magnetic Errors at the Fachhochschule in Frankfurt/M. IUGG
                      XVIII General Assembly, 1983, Hamburg  ",
      year         = "1983",
      note         = "1 sv., obr. a tb. v textu, Liter.",
}