Tech. Order No. 00-25-13. P/b, 21 x 28cm. 83p, July 1943. Prepared by the Aero Medical Laboratory and published by the AAF Air Service Command. Covers the problems that flight can cause to the aviator - altitude, low temperatures, anoxia, night vision, the bends, G-force - red-out and black-outs etc. Lots of information on the correct use of oxygen equipment , first aid etc. Illustrated in typical cartoon style. The cover is a little soiled and dog-eared otherwise in very good used condition. Stock code P17102.