Columbia subject headings:
Harvard subject headings:
Caucasus, South--History--20th century.
Nagorno-Karabakh (Azerbaijan)--Foreign relations.
Nagorno-Karabakh (Azerbaijan)--History--20th century.
Nagorno-Karabakh Conflict, 1988-1994--History.
Princeton subject headings:
Caucasus, South--History--20th century.
Nagorno-Karabakh (Azerbaijan)--Foreign relations.
Nagorno-Karabakh (Azerbaijan)--History--20th century.
Nagorno-Karabakh Conflict, 1988-1994--History.