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4151Further guidance on the environmental assessment of projects
4152Assessing the impact of sewage effluent disposal on groundwater (phase 2): final report
4153Valuing Water Use in Scotland and Northern Ireland for WFD Implementation Purposes
4154Safeguarding the lower bristol avon - public consultation
4155Contracts Department (National Rivers Authority)
4156Determination of Metal Background Reference Concentrations: Feasibility Study
4157The NRA severn-thames transfer project: an assessment of the effect of mixing of source waters on the chemical composition
4158Taw/Torridge Estuary catchment management plan : consultation report : August 1993
4159The Lowermoor environment report
4160Where to fish on the River Wye and its tributaries : a guide to day ticket facilities
4161River Irwell catchment management plan : water quality supplement
4162Switch mechanisms between alternative stable states in freshwater communities (01/574/1/A)
4163Effects of Canoeing on Fish Stocks and Angling
4164The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
4165A Review of Grayling Ecology, Status and Management Practice Recommendations for Future Managemetn in England and Wales
4166Guidelines on statutory returns : Freshwater Fish Directive
4167Teddington flow survey 1989
4168Assessing the impact of dewatering on water resources
4169The use and design of oil separators in surface water drainage systems
4170The utilisation of stick-pile otter holts in south east Wales
4171Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
4172Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met
4173River Usk barrage position statement, 4th August 1993
4174UK Sewage Sludge Survey
4175Substitute Liquid Fuels Used In Cement Kilns - Life Cycle Analysis