Columbia subject headings:
Authors, German--20th century--Biography.
Intelligence service--Germany.
Loest, Erich.
Secret service--Germany.
Harvard subject headings:
Authors, German--20th century--Biography
Germany (East)--Politics and government--Sources.
Germany (East). Ministerium für Staatssicherheit--Biography.
Loest, Erich--Political activity.
Secret service--Germany (East)--History--Sources.
Princeton subject headings:
Authors, German--20th century--Biography.
Intelligence service--Germany.
Loest, Erich--Biography.
Secret service--Germany.