Columbia subject headings:
Harvard subject headings:
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--Influence.
Germany (West)--Politics and government--1945-1990.
Intelligence service--Germany (East)--History--20th century.
Peace movements--Germany (West)--History--20th century.
Sozialistische Einheitspartei Deutschlands--Influence.
Princeton subject headings:
Espionage, Communist--Germany (West).
Germany (East)--Foreign relations--Germany (West)
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.
Germany (West)--Foreign relations--Germany (East)
Sozialistische Einheitspartei Deutschlands--History.