@article{416504,
      note = {Prepared by the UNCTAD Central Statistical Section.},
      url = {http://digitallibrary.un.org/record/416504},
      title = {Monthly commodity price bulletin. Vol. 20, no. 4, Apr.  2000 = Bulletin mensuel des prix des produits de base. Vol.  20, no 4, avril 2000 = Boletín mensual de precios de  productos básicos. Vol. 20, no. 4, abr. 2000},
      publisher = {UN,},
      recid = {416504},
      pages = {iv, 18 p. :},
      address = {Geneva :. 2000-05},
      year = {2000},
      month = {May},
}