Columbia subject headings:
Poland--Foreign relations.
Russia--Foreign relations--To 1689.
Sweden--Foreign relations.
Harvard subject headings:
Poland--Foreign relations--Russia.
Poland--Foreign relations--Soviet Union
Russia--Foreign relations--Poland.
Russia--Foreign relations--Sweden.
Russia--Foreign relations--To 1689.
Soviet Union--Foreign relations--Poland.
Soviet Union--Foreign relations--Sweden.
Sweden--Foreign relations--Russia.
Sweden--Foreign relations--Soviet Union.
Princeton subject headings:
Poland--Foreign relations--Russia.
Russia--Foreign relations--Poland.
Russia--Foreign relations--Sweden.
Russia--Foreign relations--To 1689.
Sweden--Foreign relations--Russia.