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601The Influence of Variations in Flow on General Quality Assessment of Rivers
602Stratification in the Severn Estuary- Physical aspects and biological consequences
603The Mersey estuary : a report on environmental quality
604Catches of migratory fish in the River Don, Aberdeenshire
605Stream survey and assessment in the Ashford and Folkestone areas
606Lakes, Ponds and Reservoirs in the Southern Region (NRA)
607The evaluation of an orion ammonium ion selective electrode (220/15/T)
608An Independent Review of the Defra/EA Research and Development Joint
609Anthropogenic Impacts on the Hydrology of Rivers and Lochs
610Dissemination of the Revitalised FEH Rainfall-runoff Method
611General guide to the prevention of water pollution
612Guidance for the Development of Housing on Land Affected by Contamination
613Guidance on the use of Soil Screening Values for Ecological Risk Assessment
614Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
615Life cycle assessment of disposable and reusable nappies in the UK
616Managing the social aspects of flooding: Synthesis Report
617Model For Investigating The Impacts Of Groundwater Abstraction
618National guidelines for the production of NRA regions 1990/91 regional plans
619Policy and practice for the protection of groundwater : regional appendix Welsh region
620Procurement legislation and the NRA : a brief guide
621Strategic review of development and flood risk : the River Welland catchment
622Strategic review of development and flood risk : the River Witham catchment
623Survey of copper speciation in the Great Ouse estuary
624Sustainable development indicators : monitoring change in the East Midlands
625Technical Support Materials for the Regulation of Radioactively Contaminated Land