Used for training pilots during World War 2Used by Air Training Corps to train Aircrew Cadets in Geometry during World War 2Blue cloth covered book of 80 pagesFront cover of an aeroplane flying above clouds with following words: Practical Calculations for the A.T.C. being Chapters from "Practical Mathematics for the A.T.C." by T.H. Ward Hill M.A. for potential Aircrew Cadets. Officially approved with a foreward by Air Commodore J.A.Chamier On inside cover is written in pencil: A.T.C. 1942-43 R. Ellis 69 Rennie Street Lara.pratical calculations, atc, air training corps, world war 2, ww2, pratical mathematics, t.h. ward hill, air commodore j.a. chamier, air force, australian air force, royal australian air force, geometry, 1942, george g. harrap & co. ltd