Columbia subject headings:
Harvard subject headings:
Boats and boating--Great Britain--History--20th century.
Dunkirk, Battle of, Dunkerque, France, 1940.
Merchant ships--Great Britain--History--20th century.
Princeton subject headings:
Dunkirk, Battle of, Dunkerque, France, 1940.
Great Britain. Army. British Expeditionary Force
World War, 1939-1945--Naval operations, British.