| 51 | Study of the River Stour, Kent |
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| 52 | Guide to the Medway navigation 1994 |
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| 53 | Study of the behaviour and impact of two sewage treatment works of the Thames catchment |
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| 54 | Investigation into the chemicals present and entering the Stover Lake, Stover Country Park |
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| 55 | Investigation into inputs in the Erme estuary and their effects on the bathing waters at Mothecombe |
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| 56 | The water protection zone (River Dee catchment) designation order : supplementary paper in support of the application |
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| 57 | A review of the performance of Aldershot STW and its effect on the River Blackwater |
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| 58 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London basin : April 2000 |
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| 59 | Salmon and sea trout fishing in the estuary of the River Tavy : a review |
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| 60 | The Ribble fisheries management plan : a consultation document produced by the National Rivers Authority |
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| 61 | Investigation of the impact on water quality of the SWW Teign estuary sewerage trenching activity |
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| 62 | An investigation into the water quality of the River Waldon during wet weather |
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| 63 | Investigation into the 1999 failure of the European Community bathing waters directive at Beer beach (2001) |
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| 64 | Investigation of the environmental impact of Coombe Farm on the Clapton Stream January 1992 |
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| 65 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London basin |
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| 66 | Rising groundwater levels in the chalk - basal sands aquifer of the central london basins |
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| 67 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 68 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 69 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 70 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 71 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 72 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 73 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 74 | Report for Anglian Water, NRA Unit on the uses of the Orwell and the Stour Estuaries and the use of the mathematical model to derive long term consent limits for all inputs to Orwell Estuary |
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| 75 | A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids |
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