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4251Assessing the impact of sewage effluent disposal on groundwater (phase 2): final report
4252Valuing Water Use in Scotland and Northern Ireland for WFD Implementation Purposes
4253Contracts Department (National Rivers Authority)
4254Determination of Metal Background Reference Concentrations: Feasibility Study
4255The NRA severn-thames transfer project: an assessment of the effect of mixing of source waters on the chemical composition
4256An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment
4257Taw/Torridge Estuary catchment management plan : consultation report : August 1993
4258Waterways Breeding Bird Survey Pilot Study 1998: Adaptation of BBS Census Methods to Rivers and Canals
4259The Lowermoor environment report
4260Where to fish on the River Wye and its tributaries : a guide to day ticket facilities
4261River Irwell catchment management plan : water quality supplement
4262Switch mechanisms between alternative stable states in freshwater communities (01/574/1/A)
4263River habitats in England and Wales : a national overview : river habitat survey report no 1
4264Effects of Canoeing on Fish Stocks and Angling
4265Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority
4266The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
4267A Review of Grayling Ecology, Status and Management Practice Recommendations for Future Managemetn in England and Wales
4268Guidelines on statutory returns : Freshwater Fish Directive
4269Teddington flow survey 1989
4270Assessing the impact of dewatering on water resources
4271The use and design of oil separators in surface water drainage systems
4272The utilisation of stick-pile otter holts in south east Wales
4273Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
4274Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met
4275River Usk barrage position statement, 4th August 1993