Aircraft and Submarines : The Story of the Invention, Development, and Present-Day Uses of War's Newest Weapons [electronic resource] /
Willis J. Abbot
- Project Gutenberg, 2009
- Project Gutenberg 30047 .
Public domain in the USA.
Electronic text
Submarines (Ships) World War, 1914-1918 -- Aerial operations World War, 1914-1918 -- Naval operations -- Submarine Aeronautics, Military Aeronautics