Columbia subject headings:
Family size--Economic aspects--United States.
Fertility, Human--Economic aspects--United States.
Income distribution--United States.
Harvard subject headings:
Family size--Economic aspects--United States.
Fertility, Human--Economic aspects--United States.
Income distribution--United States.
Princeton subject headings:
Family size--Economic aspects--United States.
Fertility, Human--Economic aspects--United States.
Income distribution--United States.