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4501Flood defence emergency response - national levels of service - Steering Committee notes (289/2/T)
4502Yield calculations and nitrate predictions for Grafham Water
4503River Axe abstraction : implications for water quality
4504Annual classification of river water quality 1991
4505Riverbank Protection Using Willows - Scoping Study
4506Aquatic Plant Management Group Project
4507Proposed scheme of charges in respect of applications for consent to discharge to controlled waters
4508Cost-estimation manual for sea defences (217/2/A) : draft final report
4509Moston Brook Summary Report for the Evidence and Measures Project
4510Summary report on environmental developments : volume 1 : legislation and European practice : October 1988
4511Corporate Environmental Reporting in the UK Water Sector - A Concise Review
4512Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive
4513Daily nitrous oxide flux measurements: AC0213, Nottinghamshire, 2011 urine
4514The NRA navigations
4515Environmental planning issues in the North Wessex area
4516River quality objectives
4517Background soil mineral nitrogen: AC0213, Nottinghamshire, 2010
4518River Seaton catchment river water quality classification 1991
4519Status of rare fish : literature review (draft document)
4520Herbarium Image: Trifolium campestre
4521North West Norfolk catchment management plan : consultation report : March 1995
4522Ipswich flood defences
4523Investigation of the effects of sewage treatment works discharges on receiving waters in the Lowermoor Water Treatment Works supply area November 1989
4524Investigation of the environmental impact of Coombe Farm on the Clapton Stream January 1992
4525Ranunculus in Chalk Rivers