| 251 | A report on water quality issues within the Midford Brook catchment - June 1996 |
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| 252 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 253 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 254 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 255 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report summary : November 1994 |
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| 256 | Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority |
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| 257 | Two year aesthetic survey of beaches in the South West (1990 and 1991) |
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| 258 | The Influence of Variations in Flow on General Quality Assessment of Rivers - Summary Document |
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| 259 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
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| 260 | Improved monitoring for surface water quality : the development of a manual of best practice |
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| 261 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk D in 2011 |
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| 262 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk B in 2011 |
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| 263 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk A |
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| 264 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk E |
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| 265 | Environment Agency Kent area : the Seabrook stream : BSc (Hons) Environmental biology placement report |
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| 266 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 267 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
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| 268 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : AQC audit |
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| 269 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : primary audit |
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| 270 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk B |
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| 271 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 272 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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| 273 | River Avon, Bath : aesthetic study of riverbanks through the urban area of Bath : final report |
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| 274 | Annual review of the Colne, Upper Lee, North London and Roding, Beam and Ingerbourne catchments |
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| 275 | An investigation into the water quality of a treated effluent from Hambleton Dairy, Todber, Dorset |
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