TY - RPRT A1 - US Department of Health, Education, and Welfare - Public Health Service T1 - Trends in illegitimacy, United States 1940–1965 Y1 - 1974 UR - https://www.cdc.gov/nchs/data/series/sr_21/sr21_015.pdf PB - National Center for Health Statistics CY - Rockville IS - DHEW Publication No. (HRA) 75-1013 ER -