TY - BOOK ED - United States. Department of Health, Education, and Welfare. Public Health Service TI - Color Vision Deficiencies in Youths 12-17 Years of Age,United States T2 - Vital and Health Statistics.Series 11: Data from the National Health Survey, no. 134 PY - 1974/// CY - Rockville, Md. PB - National Center for Health Statistics ER -