Columbia subject headings:
Harvard subject headings:
Finland--History--1809-1917--Congresses.
Finland--History--20th century--Congresses.
Finland--Relations--Germany--Congresses.
Germany--History--1789-1900--Congresses.
Germany--History--20th century--Congresses.
Germany--Relations--Finland--Congresses.
Princeton subject headings:
Finland--History.
Finland--Relations--Germany--Congresses.
Germany--History.
Germany--Relations--Finland--Congresses.