Columbia subject headings:
Harvard subject headings:
German literature--19th century--History and criticism--Dictionaries.
German literature--20th century--History and criticism--Dictionaries.
Social realism in literature--Dictionaries.
Socialism and literature--Germany--Dictionaries.
Princeton subject headings:
Authors, German--20th century--Biography--Dictionaries.
Communism and literature.
Dictionaries.
German literature--20th century--Bio-bibliography.
Socialism in literature.
Socialism--Germany.