Behind the gas mask. An exposure of the proposed air defence measures British Movement against War and Fascism, 'Behind the gas mask. An exposure of the proposed air defence measures', issued by British Movement against War and Fascism (London). Reprinted by arrangement with the 'Women's Committee Against War and Fascism' (n.d.). [Presumably after 10 May 1935 and ?before May 1937]. c.1935 - 1937