@article{102426,
      url = {http://digitallibrary.un.org/record/102426},
      title = {Improvement of reliability of opencast mining techniques  in difficult geological, mining and climatic conditions /},
      publisher = {UN,},
      recid = {102426},
      pages = {8 p.},
      address = {Geneva :. 1983-11-30},
      year = {1983},
      month = {Nov},
}