@article{243348,
      url = {http://digitallibrary.un.org/record/243348},
      title = {Classification of natural gas reserves and resources :  revised consolidated report /},
      publisher = {UN,},
      recid = {243348},
      pages = {4 p. :},
      address = {Geneva :. 1993-02-22},
      year = {1993},
      month = {Feb},
}