Columbia subject headings:
Harvard subject headings:
Baltic States--History--Autonomy and independence movements--Congresses.
Europe, Eastern--History--Autonomy and independence movements--Congresses.
Finland--History--Autonomy and independence movements--Congresses.
Revolutions--Baltic States--Congresses.
Revolutions--Europe, Eastern--Congresses.
Revolutions--Finland--Congresses.
Revolutions--Russia--Congresses.
Revolutions--Soviet Union--Congresses.
Russia--History--Autonomy and independence movements--Congresses.
Soviet Union--History--Autonomy and independence movements--Congresses.
Princeton subject headings:
Baltic States--History--20th century--Congresses.
Europe, Northern--History--20th century--Congresses.
Revolutions--Baltic States--Congresses.
Revolutions--Europe, Northern--Congresses.