@article{102771,
      url = {http://digitallibrary.un.org/record/102771},
      title = {Efficiency and rational application of various methods and  techniques of water drainage in opencast mining : report /},
      publisher = {UN,},
      recid = {102771},
      pages = {4 p.},
      address = {Geneva :. 1984-09-18},
      year = {1984},
      month = {Sep},
}