@article{10352,
      author       = "Kooi, J. Peter E. and Keuffel & Esser Company",
      title        = "Geodätisches Instrument  ",
      year         = "1981",
      note         = "1 sv., G 01 C 1/02., 28.7.1977, 15.1.1981, US 18.8.1976",
}