Columbia subject headings:
Business intelligence--Congresses.
Espionage--Congresses.
National security--Congresses.
World politics--1989---Congresses.
Harvard subject headings:
Business intelligence--Congresses.
Democratization--Congresses.
Espionage--Congresses.
National security--Congresses
Post-communism--Congresses
World politics--1989---Congresses
Princeton subject headings:
Business intelligence--Congresses.
Espionage--Congresses.
National security--Congresses.
World politics--1989---Congresses.