Aircraft and Submarines : The Story of the Invention, Development, and Present-Day Uses of War's Newest Weapons - Abbot, Willis J. (Willis John), 1863-1934 (Project Gutenberg, 2009)
Electronic text
Keywords: Submarines (Ships); World War, 1914-1918 -- Aerial operations; World War, 1914-1918 -- Naval operations -- Submarine; Aeronautics, Military; Aeronautics