Nomenclature 4.0
Nomenclature Primary Object Term
BookNomenclature Sub-Class
Other DocumentsNomenclature Class
Documentary ObjectsNomenclature Category
Category 08: Communication ObjectsSearch Terms
Book, Botting, Douglas, Submarine warfare--History, European War, 1914-1918--Naval operations--Submarine, WW, 1939-1945--Naval operations--Submarine