Columbia subject headings:
Drama--History and criticism--Theory, etc.
German drama--20th century--History and criticism.
German drama--21st century--History and criticism.
Uncertainty in literature.
Harvard subject headings:
Drama--History and criticism
Theater--Moral and ethical aspects.
Princeton subject headings:
Drama--History and criticism--Theory, etc.
German drama--20th century--History and criticism.
German drama--21st century--History and criticism.
Uncertainty in literature.