Columbia subject headings:
Cruelty in literature--Congresses.
Drama--History and criticism--Congresses.
Hope in literature--Congresses.
Harvard subject headings:
Cruelty in literature.
Drama--History and criticism--Congresses
European drama--History and criticism--Congresses.
Princeton subject headings:
Cruelty in literature.
Drama--History and criticism--Congresses.
European drama--History and criticism--Congresses.