TY  - BOOK
ED  - US Health Education and Welfare. Dept.of Public Health Service
TI  - A Study of Infant Mortality from Linked Records by: Age of Mother, Total - Birth Order, and Other Variables,United States
T2  - Vital and Health Statistics.Series 20: Data from the National Vital Statistics System, no. 14
PY  - 1973///
CY  - Rockville
PB  - National Centre forHealth Statistics
KW  - Health occupation
KW  - US
ER  -