Columbia subject headings:
Harvard subject headings:
Communism--Germany (East)
Germany (East)--Politics and government.
Germany (East)--Social conditions.
Social control--Political aspects--Germany (East)
Socialism--Germany (East)
Princeton subject headings:
Communism--Germany (East)--History.
Germany (East)--Politics and government--History.
Germany (East)--Social conditions--History.
Social control--Political aspects--Germany (East)--History.
Socialism--Germany--History--20th century.