| 301 | Impact assessment of scour valve test at Roadford Reservoir on water quality of the River Lyd |
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| 302 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
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| 303 | Devon area internal report - further investigations into pipe discharges in the Lower Teign estuary |
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| 304 | Distribution of Macroinvertebrates in English and Welsh Rivers based on the 1995 Survey |
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| 305 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 306 | Annual classification of river water quality 1992 : numbers of samples exceeding the quality standard |
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| 307 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report summary : November 1994 |
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| 308 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2011 |
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| 309 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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| 310 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
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| 311 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 312 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 313 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 314 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
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| 315 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 316 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
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| 317 | Future foundations : building a better South West : a sustainable construction charter for the region |
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| 318 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
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| 319 | The development of a portable battery-powered telemetry system for use in water quality investigations |
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| 320 | Hope Cove : non-compliance in 1998 with the European Community bathing water directive (76/160/EEC) |
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| 321 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
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| 322 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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| 323 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 324 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 325 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk M |
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