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526An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
527An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
528Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
529A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
530A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
531Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
532Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
533Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
534The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
535An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
536Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
537Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
538An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
539An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
540River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
541Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
542Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
543An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
544Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
545An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06
546Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993
547NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group
548Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922
549The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England;
550PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps