Columbia subject headings:
Harvard subject headings:
Porto (Portugal)--Intellectual life--20th century.
Teatro Carlos Alberto--History--20th century.
Teatro Nacional de S. João (Portugal)--History--20th century.
Theater and society--Portugal--Porto--History--20th century.
Theater--Political aspects--Portugal--Porto--History--20th century.
Princeton subject headings:
Porto (Portugal)--Intellectual life--20th century.
Teatro Carlos Alberto--History--20th century.
Teatro Nacional de S. João (Portugal)--History--20th century.
Theater and society--Portugal--Porto--History--20th century.
Theater--Political aspects--Portugal--Porto--History--20th century.