Columbia subject headings:
Armenia (Republic)--Foreign relations--Azerbaijan.
Armenia (Republic)--History--20th century.
Azerbaijan--Foreign relations--Armenia (Republic)
Azerbaijan--History--20th century.
Nagorno-Karabakh (Azerbaijan)--Ethnic relations.
Nagorno-Karabakh Conflict, 1988-1994.
Soviet Union--Politics and government.
Harvard subject headings:
Armenia (Republic)--Foreign relations--Azerbaijan.
Armenia (Republic)--History--20th century.
Azerbaijan--Foreign relations--Armenia (Republic)
Azerbaijan--History--20th century.
Nagorno-Karabakh (Azerbaijan)--Ethnic relations.
Nagorno-Karabakh Conflict, 1988-1994.
Soviet Union--Politics and government.
Princeton subject headings:
Armenia (Republic)--Foreign relations--Azerbaijan.
Armenia (Republic)--History--20th century.
Azerbaijan--Foreign relations--Armenia (Republic)
Azerbaijan--History--20th century.
Nagorno-Karabakh (Azerbaijan)--Ethnic relations.
Nagorno-Karabakh Conflict, 1988-1994.
Soviet Union--Politics and government.