Air Ministry Pamphlet 139, Bombing Sense, Some Hints For Air Bombers. P/b, 18.5 x 24cm, 16p. Prepared in the Directorate of Operational Training and issued by the Department of the Air Member for Training, Air Ministry, September 1942, reprinted March 1943. Written for the air bomber, 'tactics change the whole time, but if you have a good idea of what other people have done and are doing, you can meet fresh enemy tactics with tactics of your own that will beat him'. Illustrated with cartoon drawings. The cover is soiled/spot marked and dog-eared with a split on the seam. Reasonable used condition. Stock code P22011.