TY - JOUR T1 - Public use data tape documentation. CY - Hyattsville, Md. : CN - HE 20.6226 CN - PAR CN - HA203 PB - U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics, PP - Hyattsville, Md. : N1 - Some issues not distributed to depository libraries. N1 - Description based on: 1983. ID - 149362 KW - Childbirth KW - Fertility, Human TI - Public use data tape documentation. ER -