Basic map reading Part 5, Photos and photomaps Use of problem in teaching House to house fighting Principles and planning of tactical air operations, Principles part 1 Communist propaganda "Yankee go Home" USAF product improvement program (PIP) Meteorology Ice formation Meteorology, Fog lubrication of military vehicles, Part 1, Principles Nike Ajax battery, Defense against electronic countermeasures gyro compass, The gyroscope and the earths rotation gyro compass, The gyroscope and gravitation