| 51 | River water quality in the Midlands 1998 |
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| 52 | Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual) |
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| 53 | Technical Summary - Appraisal of the Impact of Multiple Retailers Quality Assurance Schemes on the Environment |
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| 54 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 55 | Investigate the feasibility of applying quality methods and standards within the water resources function. |
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| 56 | Swords water quality study - phase 1 : modelling the water quality of the River Thames |
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| 57 | Ecological effects of discharges from watercress farms on the chalk-streams of the NRA Wessex Region |
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| 58 | Evaluation of the effectiveness of the Water Fringe Option Scheme on Environmental Quality |
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| 59 | National marine baseline survey 1995 : littoral cell 3 : the Wash to the Thames |
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| 60 | The Distribution Of Phytoplankton And Nutrients In The North East Irish Sea During 1997; |
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| 61 | An investigation into the water quality of the River Waldon during wet weather |
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| 62 | The Distribution Of Phytoplankton And Nutrients In The North East Irish Sea During 1996; |
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| 63 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 64 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 65 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 66 | Biological investigation into the impact of the storm overflow at Middle Marwood Sewage Treatment Works |
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| 67 | A review of the performance of Aldershot STW and its effect on the River Blackwater |
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| 68 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 69 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire; |
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| 70 | Investigation into the chemicals present and entering the Stover Lake, Stover Country Park |
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| 71 | The environmental impact of the foot and mouth disease outbreak: and interim assessment |
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| 72 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 73 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 74 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 75 | Project record for the review and statistical analysis of the baseline coastal waters survey |
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