Changes in the age distribution of parents, 1940-1980.
D001741:Black or African American; D017677:Age Distribution; D000367:Age Factors; D000569:Americas; D001723:Birth Rate; D003469:Culture; D003710:Demography; D019049:Developed Countries; D005006:Ethnicity; D005191:Family Characteristics; D005195:Family Relations; D005298:Fertility; D008423:Maternal Age; D009656:North America; D010290:Parents; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D014481:United States; D044465:White People
Age Distribution--changes; Age Factors; Age Specific Fertility Rate; Americas; Birth Rate; Blacks; Cultural Background; Demographic Factors; Developed Countries; Ethnic Groups; Family And Household; Family Characteristics; Family Relationships; Fertility; Fertility Measurements; Fertility Rate; North America; Northern America; Parents; Population; Population Characteristics; Population Dynamics; United States; Whites