@article{20538,
      note = {Concerns availability and supply of phosphate rock and pot  ash.},
      url = {http://digitallibrary.un.org/record/20538},
      title = {Report of the Secretary-General.},
      publisher = {UN,},
      recid = {20538},
      pages = {36 p. :},
      address = {New York :. 1981-03-26},
      year = {1981},
      month = {Mar},
}