Columbia subject headings:
Harvard subject headings:
Romanov, N. S. (Nit Stepanovich)--Congresses.
Siberia (Russia)--History--Congresses.
Siberia (Russia)--Social conditions--Congresses.
Princeton subject headings:
Romanov, N. S. (Nit Stepanovich)--Congresses.
Siberia (Russia)--History--Congresses.
Siberia (Russia)--Social conditions--Congresses.