Title: ♯konomika GULAGa i ee rol £ v razvitii strany
Subjects: Convict labor, Glavnoe upravlenie ispravitelno-trudovykh lagerei OGPU, Sources, Economic policy, GULag NKVD, History, Concentration camps, Industrialization
Places: Soviet Union
Time periods: 1928-1932, 1933-1937, 1938-1942