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501Appendix to the biodiversity strategy and action plan for the Environment Agency (Thames Region) : costed action plan 2000-2003
502An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001
503Investigation into the 1999 failure of the European Community bathing waters directive at Teignmouth Town Beach (2001)
504An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment
505Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met
506A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft
507The hydrogeological classification of superficial clay : the hydrogeological characterisation of glacial till and glacio-lacustrine sediments in Shropshire
508A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk
509A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste
510Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995
511Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992
512An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000
513Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season
514Guidance notes for local planning authorities on the methods of protecting the water environment through development plans
515Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989
516The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads
517The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997
518Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996
519Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
520Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
521Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
522Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region
523Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
524Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996
525River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team