R/T signal procedure Protection against gas and air raids : pamphlet No. 3 : passive air defence / The War Office Manual of field works (all arms) : provisional English master of arms : from the twelfth to the twentieth century / J.D. Aylward Handbook of artillery instruments and range-finders Handbook of artillery instruments and range-finders / The War Office : Part 1 Artillery Training Tank training machine gunners handbook : including the Vickers and Lewis automatic machine guns / J. Bostock air publication Pilot's notes for Spitfire IX, XI & XVI : Merlin 61, 63, 66, 70 or 266 engine Vocabulary of Clothing and Necessaries. Technical Notes, R.F.C.
