Columbia subject headings:
Azerbaijan--Foreign relations--Sources.
Azerbaijan--Foreign relations--Turkey--Sources.
Topçubaşov, Ä. Ä., 1862-1934--Sources.
Harvard subject headings:
Azerbaijan--Foreign relations--Turkey--Sources.
Topçubaşov, Ä. Ä., 1862-1934--Sources.
Turkey--Foreign relations--1918-1960--Sources.
Turkey--Foreign relations--Azerbaijan--Sources.
Princeton subject headings: