@book{285768,
	author = {United States. and National Center for Health Statistics (U.S.),},
	title = {Needs for national studies of population dynamics :},
	publisher = {U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration,},
	year = {1970.},
	series = {Vital and health statistics. Series 4, Documents and committee reports ;},
	address = {Rockville, Md. :},
	note = {"An assessment of the types of studies needed in the field of population dynamics, the specific types of data needed to yield such studies, and the steps required to meet these needs most effectively."},
	url = {https://purl.fdlp.gov/GPO/gpo115664}
}