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576The 1990 river and estuary classification survey of England and Wales
577The evaluation of an orion ammonium ion selective electrode (220/15/T)
578An Independent Review of the Defra/EA Research and Development Joint
579Anthropogenic Impacts on the Hydrology of Rivers and Lochs
580Dissemination of the Revitalised FEH Rainfall-runoff Method
581General guide to the prevention of water pollution
582Guidance for the Development of Housing on Land Affected by Contamination
583Guidance on the use of Soil Screening Values for Ecological Risk Assessment
584Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
585Life cycle assessment of disposable and reusable nappies in the UK
586Managing the social aspects of flooding: Synthesis Report
587Model For Investigating The Impacts Of Groundwater Abstraction
588National guidelines for the production of NRA regions 1990/91 regional plans
589Operational mechanisms for the protection and enhancement of headwaters
590Policy and practice for the protection of groundwater : regional appendix Welsh region
591Procurement legislation and the NRA : a brief guide
592Strategic review of development and flood risk : the River Welland catchment
593Strategic review of development and flood risk : the River Witham catchment
594Survey of copper speciation in the Great Ouse estuary
595Sustainable development indicators : monitoring change in the East Midlands
596Technical Support Materials for the Regulation of Radioactively Contaminated Land
597The impact of climate change on severe droughts: Implications for decision making
598The Impact of Grazing and Upland Management on Erosion and Runoff
599The Potential For Generating Hydro-Electricity From Weirs
600The Potential For Aquifer Storage And Recovery In England And Wales