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551A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
552Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
553A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
554Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
555Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
556Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
557The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
558An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
559Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
560Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
561Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
562An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
563An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
564River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
565Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
566Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
567An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
568Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
569A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft
570An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06
571Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993
572NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group
573Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report
574Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922
575The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England;