Columbia subject headings:
Germany--Relations--Russia--History--Bibliography.
History--Research--Soviet Union--Bibliography.
Russia--Relations--Germany--History--Bibliography.
Harvard subject headings:
Germany--Relations--Russia--Bibliography.
History--Research--Soviet Union--Bibliography.
Russia--Relations--Germany--Bibliography.
Princeton subject headings:
Germany--Relations--Russia--Bibliography.
Germany--Relations--Soviet Union--Bibliography.
History--Research--Soviet Union--Bibliography.
Russia--Relations--Germany--Bibliography.
Soviet Union--Relations--Germany--Bibliography.