Columbia subject headings:
Belém (Brazil)--Description and travel.
Belém (Brazil)--Economic conditions.
Belém (Brazil)--Social conditions.
Harvard subject headings:
Belém (Brazil)--Description and travel.
Belém (Brazil)--Economic conditions.
Belém (Brazil)--Social conditions.
Princeton subject headings:
Belém (Brazil)--Description and travel.
Belém (Brazil)--Economic conditions.
Belém (Brazil)--Social conditions.