Columbia subject headings:
Inland navigation--Russia--History--Congresses.
Inland navigation--Soviet Union--History--Congresses.
Shipbuilding--Russia--History--Congresses.
Shipbuilding--Soviet Union--History--Congresses.
Shipping--Russia--History--Congresses.
Shipping--Soviet Union--History--Congresses.
Steamboats--Russia--History--Congresses.
Harvard subject headings:
Inland water transportation--Russia--History--Congresses.
Inland water transportation--Soviet Union--History--Congresses.
Shipbuilding--Russia--History--Congresses.
Shipbuilding--Soviet Union--History--Congresses.
Shipping--Russia--History--Congresses.
Shipping--Soviet Union--History--Congresses.
Steamboats in literature--Congresses.
Steamboats--Conservation and restoration--Russia (Federation)--Congresses.
Steamboats--Russia--History--Congresses.
Princeton subject headings:
Inland water transportation--Russia--History--Congresses.
Inland water transportation--Soviet Union--History--Congresses.
Shipbuilding--Russia--History--Congresses.
Shipbuilding--Soviet Union--History--Congresses.
Shipping--Russia--History--Congresses.
Shipping--Soviet Union--History--Congresses.
Steamboats in literature--Congresses.
Steamboats--Conservation and restoration--Russia (Federation)--Congresses.
Steamboats--Russia--History--Congresses.