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576River quality in England and Wales : a report of the 1990 survey
577Snapshots of the environment : understanding coastal water quality
578The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
579The evaluation of ingold ion selective ammonium electrode (220/23/T)
580Rivers of the Isle of Wight fact file
581Stratification in the Severn Estuary- Physical aspects and biological consequences
582The Mersey estuary : a report on environmental quality
583'Sea Vigil' water quality monitoring : the East coast 1992-1993
584Lakes, Ponds and Reservoirs in the Southern Region (NRA)
585The 1990 river and estuary classification survey of England and Wales
586The evaluation of an orion ammonium ion selective electrode (220/15/T)
587An Independent Review of the Defra/EA Research and Development Joint
588Anthropogenic Impacts on the Hydrology of Rivers and Lochs
589Dissemination of the Revitalised FEH Rainfall-runoff Method
590General guide to the prevention of water pollution
591Guidance for the Development of Housing on Land Affected by Contamination
592Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
593Life cycle assessment of disposable and reusable nappies in the UK
594Managing the social aspects of flooding: Synthesis Report
595Model For Investigating The Impacts Of Groundwater Abstraction
596National guidelines for the production of NRA regions 1990/91 regional plans
597Operational mechanisms for the protection and enhancement of headwaters
598Policy and practice for the protection of groundwater : regional appendix Welsh region
599Strategic review of development and flood risk : the River Welland catchment
600Strategic review of development and flood risk : the River Witham catchment