Railway companies (staff) : return of (A) the number of persons employed by the railway companies of Great Britain during the week ended March 7, 1931, (B) the rates of pay, and the average weekly salary or wage of and the average weekly payments to certain selected grades during the weeks ended March 7, 1931, compared with the week ended March 8, 1930 /
Great Britain.His Majesty's Stationery Office,issuing body.
Great Britain.Ministry of Transport.