Sovetakan Hayastani 40 tarin.
Publisher: Haypethrat
Published: 1961
Place of publication: Erevan
Language: arm
Number of pages: 315
Subjects: Armenia (Republic) -- History -- 1920-1991.
Other titles: Sovetakan Hayastani kʻaṛasun tarin; 40 let Sovetskoĭ Armenii