Columbia subject headings:
Harvard subject headings:
Commedia dell'arte--History and criticism--20th century.
German drama--History and criticism--20th century.
Italian drama (Comedy)--Appreciation--Europe.
Italian drama (Comedy)--Appreciation--Germany.
Theater--Germany--History--20th century.
Princeton subject headings:
Commedia dell'arte--History and criticism--20th century.
German drama--20th century--History and criticism.
Italian drama (Comedy)--Appreciation--Europe.
Italian drama (Comedy)--Appreciation--Germany.
Theater--Germany--History--20th century.