Columbia subject headings:
Catalan drama--History and criticism.
Greek drama (Tragedy)
Harvard subject headings:
Catalan drama--History and criticism--Congresses.
Catalan literature--20th century--History and criticism--Congresses.
Greek drama (Tragedy)--Congresses.
Princeton subject headings:
Catalan drama--History and criticism--Congresses.
Catalan literature--20th century--History and criticism--Congresses.
Greek drama (Tragedy)--Congresses.