Columbia subject headings:
Labor productivity--Soviet Union.
Soviet Union--Economic policy--1928-1932.
Wages--Soviet Union.
Harvard subject headings:
Labor productivity--Soviet Union.
Soviet Union--Economic policy--1928-1932.
Wages--Soviet Union.
Princeton subject headings:
Industrial organization--Soviet Union.
Soviet Union--Economic policy--1928-1932.
Wages and labor productivity--Soviet Union.