Columbia subject headings:
Internal security--Poland.
Poland--Politics and government--1989-
Trials (Political crimes and offenses)--Poland.
Harvard subject headings:
Intelligence officers--Poland.
Internal security--Poland
Poland. Ministerstwo Bezpieczeʹnstwa Publicznego.
Princeton subject headings:
Internal security--Poland.
Poland--Politics and government--1945-.
Trials (Political crimes and offenses)--Poland.