Insurgency and counterinsurgency
Laramie Squadron Open House
NASA - [Aerospace History 17] - The History of the XV-15 Tilt Rotor Research Aircraft, From Conce.pdf
Chinese used explosive powder for religious festivals Fill bamboo tubes with this powder and attached them to arrows "fire arrows” Repelled the.
X Vehicles Monograph31
THE AIR FORCE ASSOCIATION THE FORCE BEHIND THE FORCE.
Monograph 31
The National Advisory Comittee for Aeronautics Annoteted Bibliography
TheHistoryofThe XV-15Tilt RotorResearch Aircraft
AMERICAN X-VEHICLES