@article{244085,
      url = {http://digitallibrary.un.org/record/244085},
      title = {Economic aspects of ecological issues linked with coal  mining /},
      publisher = {[UN],},
      recid = {244085},
      pages = {3 p.},
      address = {Geneva :. 1993-07-29},
      year = {1993},
      month = {Jul},
}