| 51 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 52 | Report on monitoring of environmental quality in the Severn Estuary |
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| 53 | The National Centre for Toxic and Persistent Substances |
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| 54 | Wash zone report. Part 1 : the Wash NRA monitoring review |
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| 55 | The Identification of Oestrogenic Effects in Wild Fish - Phase II |
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| 56 | A review of the optimum accuracy of flow and rainfall forecasting |
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| 57 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 58 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 59 | The Mersey Estuary 1992 surveys : summary of results |
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| 60 | 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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| 61 | 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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| 62 | 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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| 63 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 64 | A review of the industrial uses of continuous monitoring systems : minerals industry processes |
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| 65 | Investigation into the intermittent failure of Wembury Beach to comply with EC bathing water |
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| 66 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
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| 67 | Technical basis for the predicted impacts of relocating Redgrave abstraction to Borehole B |
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| 68 | Evaluating the impact of groundwater abstraction on key conservation sites. Stage 1 reports for AMP3 |
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| 69 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
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| 70 | Analysis of bacteriological contamination and accumulation of metals and organics in the mussel (Mytilus edulis) |
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| 71 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |
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| 72 | The National Centre for Environmental Data and Surveillance : annual report April 1998 - April 1999 |
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| 73 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 74 | Discharge monitoring in the Kennet catchment. Part 2 : ecological effects of fish farm discharges |
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| 75 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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