Columbia subject headings:
German literature--20th century--History and criticism.
Germany--History--Unification, 1990--In literature.
Harvard subject headings:
German literature--20th century--History and criticism
German literature--Germany (East)--History and criticism
German reunification question (1949-1990) in literature.
Germany--History--Unification, 1990.
Germany--In literature.
Princeton subject headings:
German literature--20th century--History and criticism.
Germany--History--Unification, 1990--In literature.