HOME OFFICE. AIR RAID PRECAUTIONS DEPARTMENT, Air Raid Precautions. Memorandum No.C4: Air Raid Precuations for Sewage and Storm WaterPumping Stations and Sewerage Systems, London, His Majesty's Stationery Office, 1937 (1st Edition), spill., pp ?, ill. in b./n. n.t., f.to ?. (ENG)
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