Columbia subject headings:
Gehlen, Reinhard, 1902-1979.
Germany (West). Bundesnachrichtendienst--History--20th century.
Germany--Politics and government--1945-1990.
Intelligence service--Germany--History--20th century.
Harvard subject headings:
Gehlen, Reinhard, 1902-1979.
Germany (West). Bundesnachrichtendienst--History--20th century.
Germany--Politics and government--1945-1990.
Intelligence service--Germany--History--20th century.
Secret service--Germany--History--20th century.
Princeton subject headings:
Gehlen, Reinhard, 1902-1979.
Germany (West). Bundesnachrichtendienst--History--20th century.
Germany--Politics and government--1945-1990.
Intelligence service--Germany--History--20th century.