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526Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992
527A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids
528An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000
529Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season
530The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads
531The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997
532Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996
533Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
534Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
535Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
536Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region
537Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
538A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids
539River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team
540Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)
541Implementation of environmental accounting : the way ahead for a new "green agency" : submitted for the Open University Open Business School MBA
542Regulation guidance and direction making powers in the Environment Act 1995 in relation to the Environment Agency
543Opportunities for change : the Environment Agency's response to the government consultation paper on a revised UK strategy for sustainable development
544An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
545An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
546Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
547A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
548An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
549An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
550An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge