Columbia subject headings:
Dictatorship--Congresses.
Ideology--Congresses.
Totalitarianism--Congresses.
Harvard subject headings:
Comparative government--Congresses
Dictatorship--Congresses.
Ideology--Congresses
Legitimacy of governments--Case studies--Congresses.
Legitimacy of governments--Congresses.
Totalitarianism--Congresses
Princeton subject headings: