Differential fertility in the United States, 1980: continuity or change?
D000328:Adult; D001721:Birth Intervals; D004522:Educational Status; D005191:Family Characteristics; D005260:Female; D005298:Fertility; D006801:Humans; D007182:Income; D008393:Marriage; D008423:Maternal Age; D012044:Regression Analysis; D014481:United States