Columbia subject headings:
Harvard subject headings:
Communism--Soviet Union
Siberia (Russia)
Siberia (Russia)--Economic conditions.
World War, 1914-1918--Russia (Federation)--Siberia.
Princeton subject headings:
Communism--Soviet Union.
Siberia (Russia)
Siberia (Russia)--Economic conditions.
World War, 1914-1918--Russia (Federation)--Siberia.