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576Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
577A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
578An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
579An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
580An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
581Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
582A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
583A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
584Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
585Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
586A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
587Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
588Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
589Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
590The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
591An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
592Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
593Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
594Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
595An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
596An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
597River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
598Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
599An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
600Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests