Columbia subject headings:
Central planning--Soviet Union--Congresses.
Communism--Soviet Union--Congresses.
Siberia (Russia)--Economic conditions--20th century--Congresses.
Soviet Union--Economic policy--1917-1928--Congresses.
Soviet Union--Politics and government--1917-1936--Congresses.
Harvard subject headings:
Princeton subject headings:
Soviet Union--Economic conditions--1917-1945--Congresses.
Soviet Union--Intellectual life--1917-1970--Congresses.
Soviet Union--Politics and government--1917-1936--Congresses.