@article{247715,
      url = {http://digitallibrary.un.org/record/247715},
      title = {The sex and age distribution of the world populations :  the 1996 revision.},
      publisher = {UN,},
      recid = {247715},
      pages = {ix, 884 p. :},
      address = {New York :. 1997},
      year = {1997},
}