@article{27254,
      author       = "Wassef, A. M. and 19. IUGG - Vancouver, Aug. 9-22, 1987",
      title        = "Report on the activities in the quadrenium 1983 - 1987.
                      Committee for developing Countries  ",
      year         = "1987",
      note         = "Liter., 1 sv.",
}