| 51 | Clouding: the issue. An appraisal of the effects of turbidity in aquatic systems |
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| 52 | The Possible effects on migratory fish in the River Dee of increased water abstraction |
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| 53 | Study of the behaviour and impact of two sewage treatment works of the Thames catchment |
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| 54 | Integrated appraisal of the Environment Agency's water quality policies : role of the FWR manual |
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| 55 | Investigation into the chemicals present and entering the Stover Lake, Stover Country Park |
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| 56 | The quality of rivers, canals and estuaries in England and Wales : report of the 1990 survey |
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| 57 | A review of the performance of Aldershot STW and its effect on the River Blackwater |
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| 58 | Report on the control of discharges of titanium dioxide waste to the Humber Estuary : main report |
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| 59 | Investigation of the impact on water quality of the SWW Teign estuary sewerage trenching activity |
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| 60 | Biological investigation into the impact of the storm overflow at Middle Marwood Sewage Treatment Works |
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| 61 | An investigation into the water quality of the River Waldon during wet weather |
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| 62 | Investigation into the 1999 failure of the European Community bathing waters directive at Beer beach (2001) |
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| 63 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire; |
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| 64 | Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive |
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| 65 | Technical Summary - Appraisal of the Impact of Multiple Retailers Quality Assurance Schemes on the Environment |
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| 66 | Ecological effects of discharges from watercress farms on the chalk-streams of the NRA Wessex Region |
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| 67 | Investigate the feasibility of applying quality methods and standards within the water resources function. |
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| 68 | Evaluation of the effectiveness of the Water Fringe Option Scheme on Environmental Quality |
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| 69 | The environmental impact of the foot and mouth disease outbreak: and interim assessment |
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| 70 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 71 | Swords water quality study - phase 1 : modelling the water quality of the River Thames |
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| 72 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 73 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 74 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 75 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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