Columbia subject headings:
Bering, Vitus Jonassen, 1681-1741--Travel--Arctic regions.
Golden Horde--Foreign relations--Russia.
Mongolia--Foreign relations--Soviet Union.
Russia--Foreign relations--Golden Horde.
Russia--History--Miscellanea.
Soviet Union--Foreign relations--Mongolia.
Soviet Union--History.
Harvard subject headings:
Bering, Vitus Jonassen, 1681-1741--Travel--Arctic regions.
Golden Horde--Foreign relations--Russia.
Mongolia--Foreign relations--Soviet Union.
Russia--Foreign relations--Golden Horde.
Russia--History--Miscellanea.
Soviet Union--Foreign relations--Mongolia.
Soviet Union--History
Princeton subject headings: