| 401 | Running with the tide : reconciling development pressures with flood risk and the environment |
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| 402 | Water for the future in Kent : NRA response to the issues and options report |
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| 403 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 404 | Review of flood defence practices on the Somerset Levels and Moors : the report |
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| 405 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 406 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 407 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 408 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 409 | The physical character of rivers and streams in the UK and Isle of Man |
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| 410 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 411 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 412 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 413 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 414 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 415 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 416 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 417 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 418 | A brief history of the River Stour navigation : 1705 to the present day |
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| 419 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
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| 420 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 421 | The land-use planning system and the Water Framework Directive (can't read barcode) |
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| 422 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England; |
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| 423 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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| 424 | A review of the use of multifunction wardens in the Devon Area of the South Western Region of the National Rivers Authority, with particular reference to their use within the fisheries function |
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| 425 | Responses to 'Outlook for the environment' : a summary of the responses to the Environment Agency's consulation on the priorities for investment by water companies in environmental improvements as part of the Periodic Review |
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