@article{102424,
      url = {http://digitallibrary.un.org/record/102424},
      title = {Improvement of reliability of opencast mining techniques  in difficult geological, mining and climatic conditions /},
      publisher = {UN,},
      recid = {102424},
      pages = {8 p.},
      address = {Geneva :. 1983-06-13},
      year = {1983},
      month = {Jun},
}