Keely, Pat (recto) & Eckersley, Tom (verso) (Undefined) Loxley Brothers Ltd, London and Sheffield (printer) Ministry of Labour and National Service (publisher/sponsor) Royal Society For The Prevention Of Accidents (publisher/sponsor)
Unknown (Undefined) Multi Machine Plates Ltd, London EC4 (printer) Board of Trade (publisher/sponsor) Her Majesty's Stationery Office (publisher/sponsor)
Unknown (Undefined) Multi Machine Plates Ltd, London EC4 (printer) Board of Trade (publisher/sponsor) Her Majesty's Stationery Office (publisher/sponsor)
Unknown (Undefined) Multi Machine Plates Ltd, London EC4 (printer) Board of Trade (publisher/sponsor) Her Majesty's Stationery Office (publisher/sponsor)
Unknown (Undefined) Multi Machine Plates Ltd, London EC4 (printer) Board of Trade (publisher/sponsor) Her Majesty's Stationery Office (publisher/sponsor)