Columbia subject headings:
Agriculture, Cooperative--Soviet Union.
Industries--Soviet Union.
Soviet Union--Economic policy--1928-1932.
Harvard subject headings:
Agriculture, Cooperative--Soviet Union.
Industries--Soviet Union
Soviet Union--Economic policy--1928-1932.
Princeton subject headings:
Agriculture, Cooperative--Soviet Union.
Industries--Soviet Union.
Soviet Union--Economic policy--Five-year plan (1928-1932)