Columbia subject headings:
Architecture--Brazil--Rio de Janeiro--History--20th century.
Rio de Janeiro (Brazil)--Buildings, structures, etc.
Skyscrapers--Brazil--Rio de Janeiro.
Harvard subject headings:
Architecture--Brazil--Rio de Janeiro--History.
Architecture--Brazil--Rio de Janeiro.
Architecture--Conservation and restoration--Brazil--Rio de Janeiro.
Rio de Janeiro (Brazil)--Buildings, structures, etc.
Skyscrapers--Brazil--Rio de Janeiro.
Urban renewal--Brazil--Rio de Janeiro.
Princeton subject headings:
Architecture--Brazil--Rio de Janeiro--History.
Rio de Janeiro (Brazil)--Buildings, structures, etc.
Skyscrapers--Brazil--Rio de Janeiro.