TY - BOOK AU - Grady,William R. ED - United States. TI - National survey of family growth, cycle II: sample design, estimation procedures and variance estimation U1 - 304.63 PY - 0000///198.1 CY - Hyattsville, Md. PB - U.S. Dept. of Health and Human Services KW - Family size KW - United States KW - Statistical methods KW - Fertility, Human KW - Birth control KW - Statistics, Vital ER -