legitimate live births, United States - 1963 Kovar, Mary Grace creator author. National Center for Health Statistics (U.S.) issuing body. text bibliography Statistics. Statistics. dcu 1968 monographic eng 1 online resource (iv, 35 pages) : 1 illustration, forms. Mary Grace Kovar. "Statistics on the variation in birth weight according to whether or not the mother was employed during pregnancy, 1962 family income, the time of the first visit for medical care and the number of visits during the 12 months preceding childbirth. Based on data collected by a questionnaire mailed to mothers and medical care services for a sample selected from records of births in 1963 which filed with the National Center for Health Statistics." "November 1968." CRDP Program record. Includes bibliographical references (page 11). n-us--- Birth weight United States Statistics Newborn infants United States Statistics United States Statistics, Medical Birth weight Newborn infants United States FS 2.85/2:22/NO.8 FS 2.85/2:22/NO.8 (OCoLC)2680750 Series 22 Data from the national vital statistics system https://purl.fdlp.gov/GPO/gpo106555 https://purl.fdlp.gov/GPO/gpo106555 SXT 110531 20190831111941.0 on1015649387 eng