@article{239502,
      note = {Prepared by the UNCTAD Central Statistical Section.},
      url = {http://digitallibrary.un.org/record/239502},
      title = {Monthly commodity price bulletin. Vol. 17, no. 4, Apr.  1997 = Bulletin mensuel des prix des produits de base. Vol.  17, no 4, avril 1997 = Boletín mensual de precios de  productos básicos. Vol. 17, no. 4, abr. 1997.},
      publisher = {UN,},
      recid = {239502},
      pages = {iv, 18 p. :},
      address = {Geneva :. 1997-05},
      year = {1997},
      month = {May},
}