@article{1484253,
      note = {French version included in UN document: ST/ECA/4.},
      url = {http://digitallibrary.un.org/record/1484253},
      title = {Puerto Rico [cartographic material]},
      publisher = {UN,},
      recid = {1484253},
      pages = {1 map ;},
      address = {[New York] :. 1950-02},
      year = {1950},
      month = {Feb},
}