| 51 | Discharge monitoring in the Kennet catchment. Part 1 : ecological effects of sewage and trade effluents |
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| 52 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 53 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 54 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 55 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
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| 56 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
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| 57 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 58 | River Avon, Bath : aesthetic study of riverbanks through the urban area of Bath : final report |
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| 59 | Visits to Cley-next-to-the-sea and Salthouse sea defences, King's Lynn sewage treatment works |
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| 60 | Hope Cove : non-compliance in 1998 with the European Community bathing water directive (76/160/EEC) |
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| 61 | Assessing the impact of sewage effluent disposal on groundwater (phase 2): final report |
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| 62 | Investigation into the storm overflow discharge regime of Hill Barton Seawage Treatment Works Okehampton |
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| 63 | An investigation to determine if Deep Moor Landfill Site is causing an impact downstream in the Peagham Stream |
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| 64 | Light scattering in sewage effluent: a study of the effects of angle of scatter an common light sources |
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| 65 | Environmental Impacts of Alkylphenol Ethoxylates and Carboxylates. Part 1 Proposals for the Development of Environmental Quality Standards |
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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 | Report on US study tour of engineered wetlands for the treatment of waste water and mine drainage, March 1992 |
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