@article{39586,
      author = {Ford, Kathleen,},
      url = {http://library.usi.edu/record/39586},
      title = {Socioeconomic differentials and trends in the timing of  births /},
      publisher = {U.S. Dept. of Health and Human Services, Public Health  Service, Office of Health Research, Statistics, and  Technology, National Center for Health Statistics,},
      recid = {39586},
      pages = {iv, 49 p. :},
      address = {Hyattsville, Md. :},
      year = {1981},
}