Columbia subject headings:
Harvard subject headings:
Conservatism--Russia (Federation)--Congresses.
Conservatism--Russia--Congresses.
Conservatism--Soviet Union--Congresses.
Liberalism--Russia (Federation)--Congresses.
Liberalism--Russia--Congresses.
Liberalism--Soviet Union--Congresses.
Princeton subject headings:
Liberalism--Europe--Congresses.
Liberalism--Russia (Federation)--Congresses.