Columbia subject headings:
Harvard subject headings:
Germany--History--Unification, 1990--Influence.
Politics and culture--Germany--History--20th century.
Theater--Germany (East)--History--20th century.
Princeton subject headings:
German drama--Germany (East)--History and criticism.
Germany--History--Unification, 1990.
Politics in literature--History--20th century.
Theater--Political aspects--Germany (East).