Supplement no.3 to Army/Air Operations, Pamphlet no.4. (Chapter 3). Carriage of Artillery Equipment by air. Section 8. Gun, Machine, Polsten 20 mm. Mark I on … Army Air Operations Pamphlet. no.3. Air Reconnaissance Part I. General. WO 7150 - Engeland Voorschrift 26/GS Trg Publications/1621 Anti-Aircraft Training Instruction. Serial IX. Part I. Heavy Anti-Aircraft - Engeland Voorschrift Artillery Training. Volume I, Pamphlet no. 5. Information, Reconnaissance, Local Protection and Ammunition Supply - Engeland Voorschrift 26/GS Publications/599 WO 7253 Artillery Training. Volume I General Tactical Employment : Pamphlet no. 11. Air Defence - Engeland Voorschrift 26/GS Publications/1014 WO 7258 Gun Drill for Q.F. 3.7-inch Mark I, Howitzer on Carriage 3.7 inch, Mark 2P - Engeland Voorschrift 26/GS Publications/1467 WO 7981 Instruction for Armourers 1931. Supplement no.2. Guns, Machine, Bren.303-inch. Mark I. Mountings, Tripod, Bren .303-inch. M.G, Mark I and accesories. WO 680 - Engeland Voorschrift … Projector Drill for Projector Rocket 3-inch No. 2, Mark I : Provisional - Engeland Voorschrift 26/GS Publications/1208 Royal Engineers Reconnaissance Pocket Book. WO 7524, 1944 - Engeland Voorschrift Small Arms Training. Volume I, Pamphlet No. 1 Weapon Training 1937 - Engeland Voorschrift Small Arms Training. Volume I, Pamphlet No. 1, Weapon training, 1942. - Engeland Voorschrift Small Arms Training. Volume I, Pamphlet No. 1, Weapon Training, 1942. - Engeland Voorschrift