| 251 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31) |
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| 252 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
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| 253 | Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters |
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| 254 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
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| 255 | An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991) |
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| 256 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
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| 257 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
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| 258 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
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| 259 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
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| 260 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
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| 261 | The River Eden Demonstration Test Catchment (DTC) Data |
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| 262 | Environmental snapshot for the East of England [version 1] |
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| 263 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
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| 264 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
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| 265 | The evaluation of Grant/YSU 3800 water quality monitor |
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| 266 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 267 | Quality audit of biological samples for the 1991 river quality survey |
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| 268 | Pesticides in the aquatic environment 1997 full report |
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| 269 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report : November 1994 |
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| 270 | The precious resource : a brief guide to managing our water resources |
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| 271 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 272 | Priority and other specific polluting substances and the Water Framework Directive |
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| 273 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
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| 274 | Problems with sea trout and salmon in the Western Highlands |
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| 275 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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