Columbia subject headings:
Book industries and trade--Russia--History--Congresses.
Books--Russia--History--Congresses.
Harvard subject headings:
Book industries and trade--Russia--History--Congresses.
Book industries and trade--Soviet Union--History--Congresses.
Books--Russia--History--Congresses.
Books--Soviet Union--History--Congresses.
Princeton subject headings:
Book industries and trade--Russia--History--Congresses.
Books--Russia--History--Congresses.