Columbia subject headings:
Harvard subject headings:
Drang nach Osten--Congresses.
Germany--Foreign relations--Congresses.
Germany--Politics and government--20th century--Congresses.
Germany--Relations--Russia--Congresses.
Pangermanism--Congresses.
Political science--Germany--History--20th century--Congresses.
Political science--Russia--History--20th century--Congresses.
Russia--Foreign relations--Congresses.
Russia--Politics and government--1801-1917--Congresses.
Russia--Relations--Germany--Congresses.
Princeton subject headings:
Drang nach Osten--Congresses.
Germany--Foreign relations--Congresses.
Germany--Politics and government--20th century--Congresses.
Germany--Relations--Russia--Congresses.
Pangermanism--Congresses.
Political science--Germany--History--20th century--Congresses.
Political science--Russia--History--20th century--Congresses.
Russia--Foreign relations--Congresses.
Russia--Politics and government--1801-1917--Congresses.
Russia--Relations--Germany--Congresses.