@article{102756,
      url = {http://digitallibrary.un.org/record/102756},
      title = {Ways and means of dewatering opencast mines, particularly  at great depth or in difficult mining conditions /},
      publisher = {UN,},
      recid = {102756},
      pages = {8 p.},
      address = {Geneva :. 1983-05-26},
      year = {1983},
      month = {May},
}