Great Britain. Dept. of the Environment & Great Britain. Welsh Office. (1975). River pollution survey of England and Wales, updated 1973: River quality and discharges of sewage and industrial effluents. H.M.S.O..
Citación estilo ChicagoGreat Britain. Dept. of the Environment and Great Britain. Welsh Office. River Pollution Survey of England and Wales, Updated 1973: River Quality and Discharges of Sewage and Industrial Effluents. London: H.M.S.O., 1975.
Cita MLAGreat Britain. Dept. of the Environment and Great Britain. Welsh Office. River Pollution Survey of England and Wales, Updated 1973: River Quality and Discharges of Sewage and Industrial Effluents. H.M.S.O., 1975.
Warning: These citations may not always be 100% accurate.