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901Some guidance on the use of digital environmental data
902An investigation of sewage on the beach at Porthcothan
903Assessing and controlling the ecotoxicity of complex effluents
904Charging for discharges scheme : guidance to the engineering industry
905Charging for discharges scheme : guidance to the power generation industry
906The Test catchment southern : recommendations for statutory water quality objectives
907The Worcestershire Stour catchment : recommendations for statutory water quality objectives
908A survey of ferruginous minewater impacts in the Welsh coalfields
909A survey of ferruginous minewater impacts in the Welsh coalfields
910Dioxins and the River Doe Lea : plain English report
911Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report
912Narrowboats on the Thames : useful hints and tips
913Locks and weirs on the river Thames : how do they work?
914Second annual review of the Lower Bristol Avon catchment management plan
915Second annual review of the Upper Bristol Avon catchment management plan
916The River Avon and its tributaries near Malmesbury : river management studies
917Eel and elver studies in the Severn : interim report (256/6/ST)
918Fishery survey of the Bridgwater and Taunton Canal
919The quality of rivers and estuaries in Northumbria region 1990
920A guide to sustainable urban drainage : protecting the quality of our environment
921Air dispersion climate from the Castle Cement works at Ribblesdale
922Estuarial migration of Atlantic salmon in the river Dee (North Wales)
923Pesticide residues in fish taken from the Newlyn River (1992)
924Environmental screening for the Merseyside objective 1 programme : environmental screening guidelines
925Environmental statement for the River Wandle flood alleviation scheme contract one (C1)