@article{102767,
      url = {http://digitallibrary.un.org/record/102767},
      title = {Efficiency and rational application of various methods and  techniques of water drainage in opencast mining /},
      publisher = {UN,},
      recid = {102767},
      pages = {6, [2] p. :},
      address = {Geneva :. 1984-04-17},
      year = {1984},
      month = {Apr},
}