Columbia subject headings:
Europe, Eastern--History--Periodicals.
Russia--History--To 1533--Periodicals.
Harvard subject headings:
Europe, Eastern--History--Periodicals.
Russia--History--To 1533--Periodicals.
Princeton subject headings:
Europe, Eastern--History--Periodicals.
Europe--Foreign relations--Russia--Sources.
Periodicals.
Russia--Foreign relations--Europe--Sources.
Russia--History--Sources.