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576The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
577The evaluation of ingold ion selective ammonium electrode (220/23/T)
578Rivers of the Isle of Wight fact file
579The Influence of Variations in Flow on General Quality Assessment of Rivers
580Stratification in the Severn Estuary- Physical aspects and biological consequences
581'Sea Vigil' water quality monitoring : the East coast 1992-1993
582Catches of migratory fish in the River Don, Aberdeenshire
583Stream survey and assessment in the Ashford and Folkestone areas
584The 1990 river and estuary classification survey of England and Wales
585The evaluation of an orion ammonium ion selective electrode (220/15/T)
586An Independent Review of the Defra/EA Research and Development Joint
587Anthropogenic Impacts on the Hydrology of Rivers and Lochs
588Dissemination of the Revitalised FEH Rainfall-runoff Method
589General guide to the prevention of water pollution
590Guidance for the Development of Housing on Land Affected by Contamination
591Guidance on the use of Soil Screening Values for Ecological Risk Assessment
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
599Procurement legislation and the NRA : a brief guide
600Strategic review of development and flood risk : the River Welland catchment