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551Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
552An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
553An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
554Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
555Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
556Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
557Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
558Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
559The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
560An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
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)
568A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft
569An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06
570Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993
571Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report
572Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922
573The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England;
574PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps
575POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS