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551Opportunities for change : the Environment Agency's response to the government consultation paper on a revised UK strategy for sustainable development
552An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
553An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
554Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
555A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
556An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
557An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
558Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
559Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
560Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
561Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
562Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
563The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
564An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
565Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
566Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
567Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
568An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
569An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
570River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
571Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
572Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
573An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
574Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
575A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft