@article{102769,
      url = {http://digitallibrary.un.org/record/102769},
      title = {Efficiency and rational application of various methods and  techniques of water drainage in opencast mining /},
      publisher = {UN,},
      recid = {102769},
      pages = {14 p.},
      address = {Geneva :. 1984-08-07},
      year = {1984},
      month = {Aug},
}