Report of a river pollution survey of England and Wales, 1973 discharges of sewage and industrial effluent to estuaries and coastal waters excluded from volume 2 of the 1970 survey ; and, A summary of all discharges of sewage and industrial effluent recorded in the survey and to other coastal waters
Great Britain.Department of the Environment.
Great Britain.Welsh Office.
London H.M.S.O.
1974
'Volume 3'. Vols 1 and 2 comprise the 1970 survey
Water