@article{176156,
      url = {http://digitallibrary.un.org/record/176156},
      title = {The health rationale for family planning : timing of  births and child survival.},
      publisher = {UN,},
      recid = {176156},
      pages = {vii, 112 p. :},
      address = {New York :. 1994},
      year = {1994},
}