Title: Devetoseptemvriĭskata sot͡s︡ialisticheska revoli͡u︡t͡s︡ii͡a︡ i sot͡s︡ialnii͡a︡t progres na Bŭlgarii͡a︡
Subjects: Communism, Economic conditions, Social conditions
Places: Bulgaria
Time periods: 1944-1989