Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--History--20th century.
Espionage, East German--Germany (West)--History.
Germany (East). Ministerium für Staatssicherheit.
Kurras, Karl-Heinz.
Ohnesorg, Benno, 1940-1967.
Police--Germany (West)--History.
Protest movements--Germany (West)--History.
Spies--Germany (East)
Student movements--Germany (West)--History.
Princeton subject headings:
Berlin (Germany)--History--20th century.
Espionage, East German--Germany (West)--History.
Germany (East). Ministerium für Staatssicherheit
Kurras, Karl-Heinz.
Ohnesorg, Benno, 1940-1967.
Police--Germany (West)--History.
Protest movements--Germany (West)--History.
Spies--Germany (East).
Student movements--Germany (West)--History.