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226Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
227A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
228An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
229A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
230Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
231A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
232Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
233Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
234The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
235An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
236Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
237An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
238An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
239Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
240NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group
241Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report
242The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England;
243The River Eden Demonstration Test Catchment (DTC) Data
244Environmental snapshot for the East of England [version 1]
245Disturbing the season's due: plankton periodicity in Grassmere, 1987
246The Impact Of Particulate Outputs Associated With Timber Harvesting
247The evaluation of Grant/YSU 3800 water quality monitor
248Recommendations For The Processing And Presentation Of Groundwater Quality Data
249Quality audit of biological samples for the 1991 river quality survey
250Pesticides in the aquatic environment 1997 full report