@article{194496,
      author = {Jensen, Axel Martin.},
      url = {http://digitallibrary.un.org/record/194496},
      title = {Protection of roads in Mauritania against sand  encroachment.},
      publisher = {United Nations Sudano-Sahelian Office,},
      recid = {194496},
      pages = {1 v. (various pagings) :},
      address = {[Ouagadougou] :. 1993-06},
      year = {1993},
      month = {Jun},
}