@book{285772,
	author = {Chase, Helen C., and Byrnes, Mary E., and National Center for Health Statistics (U.S.),},
	title = {Trends in "prematurity" :},
	publisher = {U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics,},
	year = {1972.},
	series = {Vital and health statistics. Series 3, Analytical studies ;},
	address = {Rockville, Md. :},
	note = {"January 1972."},
	url = {https://purl.fdlp.gov/GPO/gpo117210}
}