| 301 | Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority |
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| 302 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 303 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk D |
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| 304 | A Proposed Scheme To Ensure The Quality Of Data Generated By Laboratories Undertaking Regulatory Ecotoxicological Testing |
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| 305 | Annual review of the Colne, Upper Lee, North London and Roding, Beam and Ingerbourne catchments |
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| 306 | Hope Cove : non-compliance in 1998 with the European Community bathing water directive (76/160/EEC) |
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| 307 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 308 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
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| 309 | Catchment management plans : protecting and enhancing the water environment in an integrated manner |
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| 310 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 311 | Environment Agency Kent area : the Seabrook stream : BSc (Hons) Environmental biology placement report |
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| 312 | Two year aesthetic survey of beaches in the South West (1990 and 1991) |
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| 313 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
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| 314 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk B in 2011 |
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| 315 | An assessment of mercury contamination in the Red River catchment : final draft report |
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| 316 | Report on the By Brook low flow investigations : October 2001 : volume 1 : report |
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| 317 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk F |
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| 318 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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| 319 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk A |
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| 320 | The development of a portable battery-powered telemetry system for use in water quality investigations |
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| 321 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
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| 322 | The Influence of Variations in Flow on General Quality Assessment of Rivers - Summary Document |
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| 323 | Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report |
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| 324 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk C |
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| 325 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk D |
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