@article{94776,
      url = {http://digitallibrary.un.org/record/94776},
      title = {Trade data elements and the Trade Data Elements Directory  (UNTDED) : maintenance of the Trade Data Elements Directory  : additional data elements requested by the Universal  Postal Union (UPU) : note /},
      publisher = {UN,},
      recid = {94776},
      pages = {2 p.},
      address = {Geneva :. 1986-07-10},
      year = {1986},
      month = {Jul},
}