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501Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989
502The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads
503The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997
504Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996
505Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
506Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
507Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
508Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
509Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996
510A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids
511River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team
512Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)
513Implementation of environmental accounting : the way ahead for a new "green agency" : submitted for the Open University Open Business School MBA
514Regulation guidance and direction making powers in the Environment Act 1995 in relation to the Environment Agency
515Opportunities for change : the Environment Agency's response to the government consultation paper on a revised UK strategy for sustainable development
516An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
517Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
518An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
519An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
520An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
521Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
522A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
523A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
524Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
525Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)