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651Snapshots of the environment : understanding coastal water quality
652The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
653The evaluation of ingold ion selective ammonium electrode (220/23/T)
654The Influence of Variations in Flow on General Quality Assessment of Rivers
655Stratification in the Severn Estuary- Physical aspects and biological consequences
656The Mersey estuary : a report on environmental quality
657Catches of migratory fish in the River Don, Aberdeenshire
658Stream survey and assessment in the Ashford and Folkestone areas
659Lakes, Ponds and Reservoirs in the Southern Region (NRA)
660The 1990 river and estuary classification survey of England and Wales
661The evaluation of an orion ammonium ion selective electrode (220/15/T)
662An Independent Review of the Defra/EA Research and Development Joint
663Anthropogenic Impacts on the Hydrology of Rivers and Lochs
664Dissemination of the Revitalised FEH Rainfall-runoff Method
665General guide to the prevention of water pollution
666Guidance for the Development of Housing on Land Affected by Contamination
667Guidance on the use of Soil Screening Values for Ecological Risk Assessment
668Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
669Life cycle assessment of disposable and reusable nappies in the UK
670Managing the social aspects of flooding: Synthesis Report
671Model For Investigating The Impacts Of Groundwater Abstraction
672National guidelines for the production of NRA regions 1990/91 regional plans
673Operational mechanisms for the protection and enhancement of headwaters
674Policy and practice for the protection of groundwater : regional appendix Welsh region
675Procurement legislation and the NRA : a brief guide