@article{254827,
      note = {Prepared by the UNCTAD Central Statistical Section.},
      url = {http://digitallibrary.un.org/record/254827},
      title = {Monthly commodity price bulletin. Vol. 18, no. 4, Apr.  1998 = Bulletin mensuel des prix des produits de base. Vol.  18, no 4, avril 1998 = Boletín mensual de precios de  productos básicos. Vol. 18, no. 4, abr. 1998.},
      publisher = {UN,},
      recid = {254827},
      pages = {iv, 18 p. :},
      address = {Geneva :. 1998-05},
      year = {1998},
      month = {May},
}