@article{102434,
      url = {http://digitallibrary.un.org/record/102434},
      title = {Coal-face operations with mechanized and automated systems  /},
      publisher = {UN,},
      recid = {102434},
      pages = {6 p. :},
      address = {Geneva :. 1984-02-17},
      year = {1984},
      month = {Feb},
}