Columbia subject headings:
Authoritarianism--History.
Comparative government.
Democratization--History.
Dictatorship--History.
Totalitarianism--History.
Harvard subject headings:
Authoritarianism--History.
Comparative government.
Democratization--History.
Dictatorship--History.
Totalitarianism--History.
Princeton subject headings:
Authoritarianism--Handbooks, manuals, etc.
Comparative government--Handbooks, manuals, etc.
Dictatorship--Handbooks, manuals, etc.