Selected Book
Between Human and Machine
Feedback, Control and Computing before Cybernetics
David A. Mindell
Allied Warships
Check out our new extensive section on all the Allied Warships during WWII in all theatres of the war.Over 21,000 ships
U-boat Emblems
The Emblems
Turtle in Circle
 | Turtle in a black circle Keywords: turtle,circle 1 U-boat displayed this emblem |