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476Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
477Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region
478A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids
479River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team
480Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)
481Implementation of environmental accounting : the way ahead for a new "green agency" : submitted for the Open University Open Business School MBA
482Regulation guidance and direction making powers in the Environment Act 1995 in relation to the Environment Agency
483Opportunities for change : the Environment Agency's response to the government consultation paper on a revised UK strategy for sustainable development
484An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
485An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
486Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
487A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
488An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
489An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
490An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
491Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
492A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
493A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
494Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
495Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
496A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
497Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
498Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
499Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
500The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions