AWM81 47 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars and bulletins. "Gas". [Gas Identification Bulletin Nos. 1-8; Disinfecting Gas Mask Facepieces; New War Gases - An Assessment of A Gas Attack; Poison in The Air; Certification Mark for Respirators Giving Protection Against Poison; Gases Used in War; Certification Mark for Filtration Plants Giving Protection Against Poison Gases used in War; Anti-Gas Precautions - Notes for the Guidance of Scheme Making Auth
Official Record AWM2022.1750.135 Second World War, 1939-1945AWM81 47 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars and bulletins. "Gas". [Gas Identification Bulletin Nos. 1-8; Disinfecting Gas Mask Facepieces; New War Gases



