Columbia subject headings:
Children--Economic conditions--Statistics--Periodicals.
Children--Social conditions--Statistics--Periodicals.
Children--Statistics--Periodicals.
Harvard subject headings:
Children--Economic conditions--Statistics--Periodicals.
Children--Social conditions--Statistics--Periodicals.
Children--Statistics--Periodicals.
Princeton subject headings:
Children--Economic conditions--Statistics--Periodicals.
Children--Social conditions--Statistics--Periodicals.
Children--Statistics--Periodicals.