@book{8249,
	author = {Roberts, Jean,},
	title = {Binocular visual acuity of adults, by region and selected demographic characteristics, United States, 1960-1962.},
	publisher = {U.S. Dept. of Health, Education, and Welfare, Public Health Service;},
	year = {1967.},
	series = {Public Health Service publication},
	address = {Washington,}
}