Air power and the cities / by J.M. Spaight Specimen standing orders for protection against gas and air raids in billets, camps and bivouacs for all headquarters and units air defence of Britain, 1914-1918 / Christopher Cole and E.F. Cheeseman opération Jéricho / Rémy ; avant-propos du colonel Livry-Level aviation de bombardement / C. Rougeron : Dl. 2
