US WW2 Airborne Troops Manual FM 31-30

In a very nice condition and hard to find a rare WW2 US War Department FM 31-30 Field Manual, Tactics and Technique of Airborne Troops, dedicated to the specificities of parachute and glider units. Edition of May 20, 1942.The manual contains 140 pages and is in a complete condition.On the cover is also the name of the former owner written!