@article{442353,
      note = {Prepared by the UNCTAD Central Statistics Section.},
      url = {http://digitallibrary.un.org/record/442353},
      title = {Monthly commodity price bulletin. Vol. 21, no. 4, Apr.  2001 = Bulletin mensuel des prix des produits de base. Vol.  21, no 4, avril 2001 = Boletín mensual de precios de  productos básicos. Vol. 21, no. 4, abr. 2001},
      publisher = {UN,},
      recid = {442353},
      pages = {iv, 18 p. :},
      address = {Geneva :. 2001-05},
      year = {2001},
      month = {May},
}