| 376 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
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| 377 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
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| 378 | Water resources for the future : a summary of the strategy for North West Region |
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| 379 | Water resources for the future : a summary of the strategy for South West region |
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| 380 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
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| 381 | Running with the tide : reconciling development pressures with flood risk and the environment |
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| 382 | Water for the future in Kent : NRA response to the issues and options report |
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| 383 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 384 | Review of flood defence practices on the Somerset Levels and Moors : the report |
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| 385 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 386 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 387 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
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| 388 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 389 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 390 | The physical character of rivers and streams in the UK and Isle of Man |
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| 391 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 392 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 393 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 394 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 395 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 396 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 397 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 398 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 399 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 400 | An investigation into the effects of Alton sewage works on the River Wey North |
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