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501Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)
502An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
503An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
504Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
505A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
506An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
507An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
508An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
509Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
510A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
511Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
512Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
513A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
514Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
515Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
516Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
517An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
518Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
519Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
520An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
521An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
522River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
523Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
524Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
525Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests