Columbia subject headings:
Harvard subject headings:
Central planning--Soviet Union--History.
Labor supply--Soviet Union.
Soviet Union--Economic policy--1917-1928.
Underemployment--Soviet Union--History--20th century.
Unemployment--Soviet Union--History--20th century.
Princeton subject headings:
Central planning--Soviet Union--History.
Soviet Union--Economic policy.
Underemployment--Soviet Union--History--20th century.
Unemployment--Soviet Union--History--20th century.