Columbia subject headings:
Harvard subject headings:
Literature, Modern--20th century--History and criticism
Literature, Modern--21st century--History and criticism
Political poetry--History and criticism.
Politics and literature--History--20th century.
Politics and literature--History--21st century.
Politics in literature.
Princeton subject headings:
Literature, Modern--20th century--History and criticism.
Literature, Modern--21st century--History and criticism.
Politics and literature--History--20th century.
Politics and literature--History--21st century.
Politics in literature.