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576The Influence of Variations in Flow on General Quality Assessment of Rivers
577Stratification in the Severn Estuary- Physical aspects and biological consequences
578The Mersey estuary : a report on environmental quality
579'Sea Vigil' water quality monitoring : the East coast 1992-1993
580Catches of migratory fish in the River Don, Aberdeenshire
581Lakes, Ponds and Reservoirs in the Southern Region (NRA)
582The 1990 river and estuary classification survey of England and Wales
583The evaluation of an orion ammonium ion selective electrode (220/15/T)
584An Independent Review of the Defra/EA Research and Development Joint
585Anthropogenic Impacts on the Hydrology of Rivers and Lochs
586Dissemination of the Revitalised FEH Rainfall-runoff Method
587General guide to the prevention of water pollution
588Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
589Life cycle assessment of disposable and reusable nappies in the UK
590Managing the social aspects of flooding: Synthesis Report
591Model For Investigating The Impacts Of Groundwater Abstraction
592National guidelines for the production of NRA regions 1990/91 regional plans
593Operational mechanisms for the protection and enhancement of headwaters
594Policy and practice for the protection of groundwater : regional appendix Welsh region
595Strategic review of development and flood risk : the River Welland catchment
596Strategic review of development and flood risk : the River Witham catchment
597Survey of copper speciation in the Great Ouse estuary
598Sustainable development indicators : monitoring change in the East Midlands
599Technical Support Materials for the Regulation of Radioactively Contaminated Land
600The impact of climate change on severe droughts: Implications for decision making