Columbia subject headings:
Boca (Buenos Aires, Argentina)--Economic conditions.
Boca (Buenos Aires, Argentina)--History.
Boca (Buenos Aires, Argentina)--Social conditions.
Harvard subject headings:
Boca (Buenos Aires, Argentina)--History.
Buenos Aires (Argentina)--History.
Princeton subject headings:
Boca (Buenos Aires, Argentina)--History.
Buenos Aires (Argentina)--History.