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651Aquatic Plant Management Group Project
652Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive
653The NRA navigations
654Environmental planning issues in the North Wessex area
655River quality objectives
656North West Norfolk catchment management plan : consultation report : March 1995
657Ipswich flood defences
658NRA facts 1990
659London's river (information pack on the River Thames)
660Freshwater Tamar and tributaries catchment management plan : action plan
661River Usk barrage position statement, 18th January 1991
662Exe freshwater model : quasar model design
663A Post Mortem Study of Otters (Lutra Lutra) Found Dead in South West England
664River Itchen catchment management plan : consultation report
665Macroinvertebrates of the River Nar : Great Ouse catchment : draft report
666River Darent catchment management plan : consultation report
667Clear waters : priorities for the National Rivers Authority after one year's work : the Laphroaig lecture by the Rt. Hon. the Lord Crickhowell, chairman - National Rivers Authority. Delivered on Tuesday, 30th October 1990 at the Fishmongers' Hall, London
668Regional water quality monitoring and surveillance programme for 1992 : quality investigations in controlled waters
669Upper Nene catchment management plan : consultation report summary
670Rainfall-runoff and other modelling for ungauged/low-benefit locations
671River Glen : river channel assessment : main report
672Dorset Stour : first annual review : January 1998 - December 1998
673Groundwater development scheme : Little Ouse and Thet catchment : control rules
674Mersey sub-catchment report : February 1996
675Health and ecotoxicology of otters: summary of four studies from 1988-2003