TY - BOOK ED - US Health Education and Welfare. Dept.of Public Health Service TI - A Study of Infant Mortality from Linked Records: Methods of Study and Registration Aspects,United States, 1960 live birth cohort T2 - Vital and Health Statistics.Series 20: Data from the National Vital Statistics System, no. 7 PY - 1970/// CY - Washington,D.C PB - National Centre forHealth Statistics KW - Health occupation KW - US ER -