@book{286158,
	author = {Koch, Hugo K., and National Center for Health Statistics (U.S.),},
	title = {Ophthalmology manpower :},
	publisher = {U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics,},
	year = {1973.},
	series = {Vital and health statistics. Series 14, Data on national health resources ;},
	address = {Rockville, Md. :},
	note = {"March 1973."},
	url = {https://purl.fdlp.gov/GPO/gpo114782}
}