Columbia subject headings:
Russia--Foreign relations--Serbia.
Serbia--Foreign relations--Russia.
Serbia--Foreign relations--Soviet Union.
Serbia--History.
Soviet Union--Foreign relations--Serbia.
Harvard subject headings:
Russia--Foreign relations--Serbia.
Serbia--Foreign relations--Russia.
Serbia--Foreign relations--Soviet Union.
Serbia--History.
Soviet Union--Foreign relations--Serbia.
Princeton subject headings:
Russia--Foreign relations--Serbia.
Serbia--Foreign relations--Russia.
Serbia--Foreign relations--Soviet Union.
Serbia--History.
Soviet Union--Foreign relations--Serbia.