TY - BOOK ED - United States. Department of Health, Education, and Welfare. Public Health Service TI - Ophthalmology Manpower:Characteristics of Clinical Practice,United States-1968 T2 - Vital and Health Statistics.Series 14: Data on National Health Resources, no.7 PY - 1973/// CY - Rockville,Md. PB - National Center for Health Statistics ER -