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4426Waterways Breeding Bird Survey Pilot Study 1998: Adaptation of BBS Census Methods to Rivers and Canals
4427The Lowermoor environment report
4428Where to fish on the River Wye and its tributaries : a guide to day ticket facilities
4429River Irwell catchment management plan : water quality supplement
4430Switch mechanisms between alternative stable states in freshwater communities (01/574/1/A)
4431River habitats in England and Wales : a national overview : river habitat survey report no 1
4432Effects of Canoeing on Fish Stocks and Angling
4433Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority
4434The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
4435A Review of Grayling Ecology, Status and Management Practice Recommendations for Future Managemetn in England and Wales
4436Guidelines on statutory returns : Freshwater Fish Directive
4437Teddington flow survey 1989
4438Assessing the impact of dewatering on water resources
4439The use and design of oil separators in surface water drainage systems
4440The utilisation of stick-pile otter holts in south east Wales
4441Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
4442Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met
4443River Usk barrage position statement, 4th August 1993
4444The River Ash : enhancement project
4445UK Sewage Sludge Survey
4446Substitute Liquid Fuels Used In Cement Kilns - Life Cycle Analysis
4447Cley sea defences
4448Environmental pilot audit : National Rivers Authority Anglian region central area : Brampton Huntingdon
4449Improving the Environment Agency's contribution to wetland bird populations
4450The Waterways Bird Survey