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526A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
527An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
528An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
529An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
530A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
531A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
532Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
533Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
534A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
535Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
536Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
537Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
538The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
539An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
540Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
541Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
542Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
543An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
544An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
545River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
546Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
547Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
548An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
549Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
550A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft