Upper Silesian question and Germany's coal problem / Sidney Osborne Germany before the war / Eugène Beyens ; translated [from the French] by Paul V. Cohn History of Serbia / Harold W.V. Temperley evacuation of North Russia, 1919 : presented to Parliament by command of His Majesty Abridged treatise on the construction and manufacture of ordnance in the British service In the Royal naval air service / H. Rosher ; with an introduction by Arnold Bennett Air force (Constitution) act, 1917 Air force act : "An act to provide for the discipline and regulation of the air force" King's regulations and orders for the Royal Air Force, 1918 Permanent organization of the Royal Air Force : note by the Secretary of State for Air on a scheme outlined by the Chief of the … An airman's outings / Alan John Bott ; with introd. by W.S. Brancker work and training of the Royal Flying Corps / H. Cecil