Columbia subject headings:
Central planning--Soviet Union--Congresses.
Soviet Union--Economic policy--1917-1928--Congresses.
Soviet Union--Politics and government--1917-1936--Congresses.
Harvard subject headings:
Central planning--Soviet Union--Congresses.
Soviet Union--Economic policy--1917-1928--Congresses.
Soviet Union--Politics and government--1917-1936--Congresses.
Princeton subject headings: