Title: Dvanadesetii︠a︡t kongres na BKP i sot︠s︡ialno-ikonomicheskoto razvitie na stranata prez osmata petiletka i do 1990 g.
Subjects: Economic policy, Bŭlgarska komunisticheska partii︠a︡. Kongres 1981 : Sofia, Bulgaria)
Places: Bulgaria
Time periods: 1944-