@article{102425,
      url = {http://digitallibrary.un.org/record/102425},
      title = {Improvement of reliability of opencast mining techniques  in difficult geological, mining and climatic conditions /},
      publisher = {UN,},
      recid = {102425},
      pages = {5 p.},
      address = {Geneva :. 1984-01-10},
      year = {1984},
      month = {Jan},
}