@article{102776,
      url = {http://digitallibrary.un.org/record/102776},
      title = {Exploration by geophysical methods, extraction and  transport of hard rock inclusions during overburden removal  : replies to the questionnaire /},
      publisher = {UN,},
      recid = {102776},
      pages = {14, 1, 1 p. :},
      address = {Geneva :. 1984-09-19},
      year = {1984},
      month = {Sep},
}