@article{55849,
      url = {http://digitallibrary.un.org/record/55849},
      title = {United Nations technical co-operation activities in  surveying mapping and charting, with special emphasis on  the Americas /},
      publisher = {UN,},
      recid = {55849},
      pages = {6 p.},
      address = {[New York] :. 1989-01-12},
      year = {1989},
      month = {Jan},
}