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501An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
502An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
503Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
504A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
505An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
506An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
507An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
508Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
509A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
510Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
511Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
512A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
513Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
514Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
515Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
516The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
517An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
518Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
519Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
520Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
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
525An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)