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