194,325 FERTILITY Fertility tables for birth cohorts by color: United States, 1917-1973. Introd. by Heuser Robert L Rockville 1976 U.S.Department of Health, Education,and WeIfare.Publie Health Service 4° s. nib.2, III, nib. 1, 459. The tables contain data for calendar years 1917-73.The data will be updated annually in "Vital Statistics of the U.S". Vol. 1. Natality,beginning with the 1974 data year