Columbia subject headings:
Drama--History and criticism--Congresses.
Semiotics and literature--Congresses.
Theater--Semiotics--Congresses.
Harvard subject headings:
Drama--History and criticism--Congresses
Semiotics and literature--Congresses.
Theater--Semiotics--Congresses.
Princeton subject headings:
Drama--History and criticism--Congresses.
Semiotics and literature--Congresses.
Theater--Semiotics--Congresses.