@article{186521,
      note = {Estimates updated as of 30 June 1993 = Evaluations a jour  au 30 juin 1993 = Previsiones actualizadas al 30 de junio  de 1993.},
      url = {http://digitallibrary.un.org/record/186521},
      title = {Narcotic drugs : estimated world requirements for 1993,  statistics for 1991. Supplement no. 6 = Stupéfiants :  évaluations des besoins du monde pour 1993, statistiques  pour 1991. Supplément no 6 = Estupefacientes : previsiones  de las necesidades mundiales para 1993, estadísticas para  1991. Suplemento no. 6.},
      publisher = {UN,},
      recid = {186521},
      pages = {21 p. :},
      address = {Vienna :. 1993},
      year = {1993},
}