legitimate live births, United States - 1963 Kovar, Mary Grace creator author. United States Public Health Service, issuing body. National Center for Health Statistics (U.S.) issuing body. text bibliography Statistics. Vital statistics. Vital statistics. dcu 1968 monographic eng 1 online resource (iv, 30 pages). Mary Grace Kovar. "Statistics on the prevalence of employment during pregnancy and the trimester of pregnancy during which the woman was last emplcyed, according to selected socioeconomic characteristics of the mother. Based on data collected by a questionnaire mailed to a sample of mothers selected from the certificates of legitimate live births in 1963 filed with the National Center for Health Statistics." "September 1968." CRDP Program record. Includes bibliographical references (page 10). n-us--- Pregnant women Employment United States Statistics Childbirth United States Statistics United States Statistics, Vital Childbirth Pregnant women Employment United States FS 2.85/2:22/NO.7 FS 2.85/2:22/NO.7 (OCoLC)3227 Series 22 Data from the national vital statistics system https://purl.fdlp.gov/GPO/gpo106556 https://purl.fdlp.gov/GPO/gpo106556 SXT 110531 20190831111941.0 on1015645543 eng