| 251 | Annual classification of river water quality 1992 : numbers of samples exceeding the quality standard |
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| 252 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
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| 253 | Improved monitoring for surface water quality : the development of a manual of best practice |
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| 254 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk D in 2011 |
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| 255 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk B in 2011 |
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| 256 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk A |
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| 257 | Report on the By Brook low flow investigations : October 2001 : volume 1 : report |
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| 258 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk E |
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| 259 | Environment Agency Kent area : the Seabrook stream : BSc (Hons) Environmental biology placement report |
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| 260 | Future foundations : building a better South West : a sustainable construction charter for the region |
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| 261 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 262 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
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| 263 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : AQC audit |
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| 264 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : primary audit |
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| 265 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk B |
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| 266 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 267 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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| 268 | An assessment of mercury contamination in the Red River catchment : final draft report |
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| 269 | Annual review of the Colne, Upper Lee, North London and Roding, Beam and Ingerbourne catchments |
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| 270 | An investigation into the water quality of a treated effluent from Hambleton Dairy, Todber, Dorset |
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| 271 | Aldrin and dieldrin concentrations in the Newlyn catchment during 1991 an interim report |
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| 272 | Nutrient export modelling on the River Bure, Norfolk : progress report 2 : June-July 1995 |
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| 273 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 274 | Development of the Acid Water Indicator Community (AWIC) Macroinvertebrate Family and Species Level |
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| 275 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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