@article{102428,
      url = {http://digitallibrary.un.org/record/102428},
      title = {Improvement of reliability of opencast mining techniques  in difficult geological, mining and climatic conditions /},
      publisher = {UN,},
      recid = {102428},
      pages = {2 p.},
      address = {Geneva :. 1984-04-03},
      year = {1984},
      month = {Apr},
}