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