Author: Nauchnyĭ sovet po kompleksnoĭ probleme "Zakonomernosti razvitii︠a︡ nat︠s︡ionalʹnykh i︠a︡zykov v svi︠a︡zi s razvitiem sot︠s︡ialisticheskikh nat︠s︡iĭ" (Akademii︠a︡ nauk SSSR)