| 76 | The 1990 river and estuary classification survey of England and Wales |
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| 77 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 78 | Cyanobacteria (blue-green algae) in the south west region 1989 |
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| 79 | Alternative Methods For The Biological Classification Of Rivers |
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| 80 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
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| 81 | Biological water quality monitoring in the Midlands region |
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| 82 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
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| 83 | Environmental assessment of selected abandoned minewaters in the North East region |
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| 84 | Policy and practice for the protection of groundwater : Thames Region appendix |
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| 85 | Non-compliance with water quality objectives on the Croyde stream (upper catchment) |
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| 86 | Development of an Estuarine Classification Scheme for the Water Framework Directive |
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| 87 | The National Centre for Environmental Data and Surveillance : business plan 1999/2000 |
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| 88 | 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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| 89 | Monitoring of the Priory storm overflow on the River Tone at Taunton : June - November 1991 and water quality investigations unit January 1992 |
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| 90 | Investigation to determine the cause of the long-term BOD failure at Higher Weaver routine monitoring site (70532960) for 1995 and 1997 |
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| 91 | 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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| 92 | 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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| 93 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 94 | Discharge monitoring in the Kennet catchment. Part 2 : ecological effects of fish farm discharges |
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| 95 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 96 | An investigation into the water quality of a treated effluent from Hambleton Dairy, Todber, Dorset |
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| 97 | Analysis of bacteriological contamination and accumulation of metals and organics in the mussel (Mytilus edulis) |
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| 98 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
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| 99 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |
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| 100 | Investigation into the intermittent failure of Wembury Beach to comply with EC bathing water |
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