| 426 | Running with the tide : reconciling development pressures with flood risk and the environment |
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| 427 | Water for the future in Kent : NRA response to the issues and options report |
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| 428 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 429 | Review of flood defence practices on the Somerset Levels and Moors : the report |
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| 430 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 431 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 432 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
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| 433 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 434 | The physical character of rivers and streams in the UK and Isle of Man |
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| 435 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 436 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 437 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 438 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
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| 439 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 440 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 441 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 442 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 443 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 444 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 445 | A brief history of the River Stour navigation : 1705 to the present day |
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| 446 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
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| 447 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 448 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 449 | The land-use planning system and the Water Framework Directive (can't read barcode) |
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| 450 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England; |
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