Nomenclature 4.0
Nomenclature Primary Object Term
BookNomenclature Sub-Class
Other DocumentsNomenclature Class
Documentary ObjectsNomenclature Category
Category 08: Communication ObjectsSearch Terms
World War, 1939-1945--Naval operations--Submarine., World War, 1939-1945--Naval operations, German., World War, 1939-1945--Campaigns--North Atlantic Ocean., Merchant marine--United States--History--20th century., Atlantic Coast (North America)--History--20th century.