| 51 | Development of an Estuarine Classification Scheme for the Water Framework Directive |
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| 52 | Charging for discharges scheme : guidance to the agricultural industry |
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| 53 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
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| 54 | Guidance on the use of Bioassays in Ecological Risk Assessment |
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| 55 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
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| 56 | Water quality in Anglian Region : the first five years |
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| 57 | Investigations of discharges into the River Lemon at Newton Abbot |
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| 58 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 59 | The Mersey Estuary 1992 surveys : summary of results |
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| 60 | Biological water quality monitoring in the Midlands region |
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| 61 | The fuel additive MTBE - a groundwater protection issue? |
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| 62 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 63 | Report on monitoring of environmental quality in the Severn Estuary |
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| 64 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 65 | Corporate Environmental Reporting in the UK Water Sector - A Concise Review |
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| 66 | Quality audit of biological samples for the 1990 river quality survey |
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| 67 | A report on the River Chew at Chewton Mendip, 6th August 1992 |
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| 68 | The Ribble Estuary 1992 surveys : summary of results |
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| 69 | Policy and practice for the protection of groundwater : Thames Region appendix |
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| 70 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 71 | Non-compliance with water quality objectives on the Croyde stream (upper catchment) |
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| 72 | An investigation of the water quality in three Plymouth catchment streams |
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| 73 | The National Centre for Toxic and Persistent Substances |
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| 74 | Assessment of the Impact of Nutrient Removal on Eutrophic Rivers |
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| 75 | A review of the optimum accuracy of flow and rainfall forecasting |
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