Passive air defence : parts I and II : issued by headquarters 21 army group air raid precautions handbook Structural defence / issued by the Home Office, Air raid precautions department Air defence / E.B. Ashmore Roof over Britain : the official story of Britain's anti-aircraft defences 1939-1942 / prepared for the War Office and the Air Ministry by the Ministry … Small arms training : Range courses (war), (For all units at home other than Royal Armoured Corps, Air Defence Great Britain, and Officer Cadet Training … Artillery training : Air defence / War Office. Vol I. General Tactical Employment - Engeland Voorschrift, 26/GS Publications/1014 N.V. Hollandsche Signaalapparaten. "Reporter" and "RBS70" a low level air defence solution N.V. Hollandsche Signaalapparaten. "Reporter" …..an indispencible aid in air defence Passive air defence : parts I and II : issued by headquarters 21 army group Defence electronics : sensors, combat systems, display and weapon control systems for Navy, Army and Air Force applications / Hollandse Signaalapparaten Air operations by air defence of Great-Britain and fighter command in connection with the German flying bomb and rocket offensives, 1944-1945 / by Roderic Hill a.r.p. department circular Civil defence act / Home Office, Air raid precautions department