From: Manual of Medical Research Laboratory, United States School of Aviation Medicine, Randolph Field, Tex, United States. War Dept. Division of Military Aeronautics, U.S. Government Printing Office, 1918, page 213.
From: Manual of Medical Research Laboratory, United States School of Aviation Medicine, Randolph Field, Tex, United States. War Dept. Division of Military Aeronautics, U.S. Government Printing Office, 1918, page 213.