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4101Proposed scheme of charges in respect of discharges to controlled waters : an introduction
4102Business requirement specification : integrated accounting system for the (IAS)
4103River Channel Typology: Feasibility for Use in River Management
4104Regional water quality monitoring and surveillance programme for 1992 : biological impact assessment of discharges on receiving waters
4105Wicken fen : nature reserve
4106A report on fish production in the National Rivers Authority
4107The Kentish Stour
4108Regional plan 1994/95
4109River Valency and Crackington Streams catchment river water quality classification 1990
4110Flood defence emergency response - national levels of service - Steering Committee notes (289/2/T)
4111Yield calculations and nitrate predictions for Grafham Water
4112River Axe abstraction : implications for water quality
4113Annual classification of river water quality 1991
4114Riverbank Protection Using Willows - Scoping Study
4115Aquatic Plant Management Group Project
4116Proposed scheme of charges in respect of applications for consent to discharge to controlled waters
4117Cost-estimation manual for sea defences (217/2/A) : draft final report
4118Moston Brook Summary Report for the Evidence and Measures Project
4119Summary report on environmental developments : volume 1 : legislation and European practice : October 1988
4120Corporate Environmental Reporting in the UK Water Sector - A Concise Review
4121Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive
4122Daily nitrous oxide flux measurements: AC0213, Nottinghamshire, 2011 urine
4123The NRA navigations
4124Background soil mineral nitrogen: AC0213, Nottinghamshire, 2010
4125River Seaton catchment river water quality classification 1991