Columbia subject headings:
Harvard subject headings:
Beckett, Samuel, 1906-1989--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Broadcasting.
Drama--20th century--History and criticism
Literature, Modern--20th century--History and criticism
Princeton subject headings:
Beckett, Samuel, 1906---Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Broadcasting.
Drama--20th century--History and criticism.
Literature, Modern--20th century--History and criticism.