| 51 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 52 | Impact assessment of Helston Sewage Treatment Works on water quality of the River Cober Loe Pool |
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| 53 | Discharge monitoring in the Kennet catchment. Part 1 : ecological effects of sewage and trade effluents |
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| 54 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
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| 55 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
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| 56 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 57 | Interim guidelines on the ranges of enteric organism decay rates (T90s) under different marine conditions |
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| 58 | Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales |
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| 59 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 60 | Visits to Cley-next-to-the-sea and Salthouse sea defences, King's Lynn sewage treatment works |
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| 61 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 62 | Assessment of the nutrient status and associated algal productivity of Malham Tarn, Yorkshire
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| 63 | River Avon, Bath : aesthetic study of riverbanks through the urban area of Bath : final report |
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| 64 | An investigation to determine if Deep Moor Landfill Site is causing an impact downstream in the Peagham Stream |
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| 65 | An investigation into the presence of high levels of cadmium in sea-water samples from Mounts Bay, Cornwall |
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| 66 | Investigation into failures of the River Dalch from Canns Mill Bridge to below Lapford sewage treatment works (2001) |
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| 67 | Environmental Impacts of Alkylphenol Ethoxylates and Carboxylates. Part 1 Proposals for the Development of Environmental Quality Standards |
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| 68 | An investigation into possible causes of poor water quality at Nymphayes Bridge (R30D009) on the Gissage Lake |
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| 69 | Report on US study tour of engineered wetlands for the treatment of waste water and mine drainage, March 1992 |
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| 70 | Light scattering in sewage effluent: a study of the effects of angle of scatter an common light sources |
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