Columbia subject headings:
Azerbaijan--Foreign relations--Soviet Union.
Azerbaijan--Foreign relations--Turkey.
Azerbaijan--History--Revolution, 1917-1921.
Soviet Union--Foreign relations--Azerbaijan.
Turkey--Foreign relations--Azerbaijan.
Harvard subject headings:
Azerbaijan--Foreign relations--Soviet Union.
Azerbaijan--Foreign relations--Turkey.
Azerbaijan--History--Revolution, 1917-1921.
Soviet Union--Foreign relations--Azerbaijan.
Turkey--Foreign relations--Azerbaijan.
Princeton subject headings:
Azerbaijan--History--Revolution, 1917-1921.