'Volume 3'. Vols 1 and 2 comprise the 1970 survey.
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 . ISBN 0117508438. Published by H.M.S.O. in 1974. Publication and catalogue information, links to buy online and reader comments.