Proper noun
Nagorno-Karabakh Autonomous Oblast
Autonomous oblast of the Soviet Union created in the Azerbaijan SSR in 1923 and lasting until 1991.
1936, Constitution of the Soviet Union; Chapter II, The Organization of the Soviet State: Article 24, page 14:The Azerbaijan SSR includes the Nakhichevan Autonomous Soviet Socialist Republic and the Nagorno-Karabakh Autonomous Oblast.