@article{102427,
      url = {http://digitallibrary.un.org/record/102427},
      title = {Improvement of reliability of opencast mining techniques  in difficult geological, mining and climatic conditions /},
      publisher = {UN,},
      recid = {102427},
      pages = {6 p. :},
      address = {Geneva :. 1984-04-02},
      year = {1984},
      month = {Apr},
}