Columbia subject headings:
Barcelona (Spain)--Economic conditions.
Barcelona (Spain)--Politics and government.
Barcelona (Spain)--Social conditions.
Harvard subject headings:
Barcelona (Spain)--Economic conditions.
Barcelona (Spain)--Politics and government.
Barcelona (Spain)--Social conditions.
Princeton subject headings:
Barcelona (Spain)--Economic conditions.
Barcelona (Spain)--Politics and government.
Barcelona (Spain)--Social conditions.