TY - BOOK ED - United States. Department of Health, Education, and Welfare. Public Health Service TI - Hearing and Related Medical Findings Among Children,United States: : Race, Area, and Socioeconomic Differentials T2 - Vital and Health Statistics.Series 11: Data from the National Health Survey, no. 122 PY - 1972/// CY - Rockville, Md. PB - National Center for Health Statistics ER -