| 51 | Biological water quality monitoring in the Midlands region |
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| 52 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 53 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 54 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
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| 55 | Report on monitoring of environmental quality in the Severn Estuary |
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| 56 | The National Centre for Toxic and Persistent Substances |
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| 57 | River quality in England and Wales : a report of the 1990 survey |
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| 58 | Wash zone report. Part 1 : the Wash NRA monitoring review |
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| 59 | The Identification of Oestrogenic Effects in Wild Fish - Phase II |
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| 60 | A review of the optimum accuracy of flow and rainfall forecasting |
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| 61 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 62 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 63 | An ecological study of the effects of ferric dosing on the plankton and benthic invertebrates of Grafham Water between May 1990 and November 1991 |
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| 64 | Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus |
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| 65 | A study of the use of Glycol-based de-icers at RAF Lyneham and their impact on local watercourses during the winter of 1999/2000 |
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| 66 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 67 | Development of the Acid Water Indicator Community (AWIC) Macroinvertebrate Family and Species Level |
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| 68 | A review of the industrial uses of continuous monitoring systems : minerals industry processes |
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| 69 | Assessment of radioactive discharge screening levels for biota protected under the habitats regulations : April 2002 |
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| 70 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
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| 71 | Technical basis for the predicted impacts of relocating Redgrave abstraction to Borehole B |
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| 72 | Evaluating the impact of groundwater abstraction on key conservation sites. Stage 1 reports for AMP3 |
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| 73 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
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| 74 | Analysis of bacteriological contamination and accumulation of metals and organics in the mussel (Mytilus edulis) |
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| 75 | Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales |
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