Columbia subject headings:
Harvard subject headings:
German literature--20th century--History and criticism
History in literature.
Literature and history--Germany.
Literature and history--Poland.
Polish literature--20th century--History and criticism.
Politics in literature.
Princeton subject headings:
German literature--20th century--History and criticism.
History in literature.
Literature and history--Germany.
Literature and history--Poland.
Polish literature--20th century--History and criticism.
Politics in literature.