Columbia subject headings:
Cities and towns--Russia--History--Congresses.
Russia--Civilization--Congresses.
Russia--History, Local--Congresses.
Russia--Intellectual life--Congresses.
Harvard subject headings:
Cities and towns--Russia--History--Congresses.
Russia--Civilization--Congresses.
Russia--History, Local--Congresses.
Russia--Intellectual life--Congresses.
Princeton subject headings:
Cities and towns--Russia--History--Congresses.
Russia--Civilization--Congresses.
Russia--History, Local--Congresses.