Columbia subject headings:
Communism and literature.
German literature--20th century--History and criticism.
Working class in literature.
Harvard subject headings:
Communism and literature.
German literature--20th century--History and criticism
Working class in literature.
Working class writings, German--History and criticism.
Princeton subject headings:
Communism and literature.
German literature--20th century--History and criticism.
Working class in literature.