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576The evaluation of ingold ion selective ammonium electrode (220/23/T)
577Rivers of the Isle of Wight fact file
578The Influence of Variations in Flow on General Quality Assessment of Rivers
579Stratification in the Severn Estuary- Physical aspects and biological consequences
580The Mersey estuary : a report on environmental quality
581Catches of migratory fish in the River Don, Aberdeenshire
582Stream survey and assessment in the Ashford and Folkestone areas
583Lakes, Ponds and Reservoirs in the Southern Region (NRA)
584The evaluation of an orion ammonium ion selective electrode (220/15/T)
585An Independent Review of the Defra/EA Research and Development Joint
586Anthropogenic Impacts on the Hydrology of Rivers and Lochs
587Dissemination of the Revitalised FEH Rainfall-runoff Method
588General guide to the prevention of water pollution
589Guidance for the Development of Housing on Land Affected by Contamination
590Guidance on the use of Soil Screening Values for Ecological Risk Assessment
591Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
592Life cycle assessment of disposable and reusable nappies in the UK
593Managing the social aspects of flooding: Synthesis Report
594Model For Investigating The Impacts Of Groundwater Abstraction
595National guidelines for the production of NRA regions 1990/91 regional plans
596Policy and practice for the protection of groundwater : regional appendix Welsh region
597Procurement legislation and the NRA : a brief guide
598Strategic review of development and flood risk : the River Welland catchment
599Strategic review of development and flood risk : the River Witham catchment
600Survey of copper speciation in the Great Ouse estuary