Columbia subject headings:
Rusland; Sowjetrusland; bolsjewisme en ideologie; algemeen; buitenlandse beschouwingen.
Russia; Soviet Union 1917--1987; bolshevism and ideology in general; observations, evaluations, analyses of the Soviet system; by foreign authors.
Harvard subject headings:
Soviet Union--Economic policy--1917-1928.
Princeton subject headings:
Soviet Union--Economic policy--1917-1928.