| 351 | Rising groundwater levels in the chalk - basal sands aquifer of the central london basins |
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| 352 | Investigation of the Relationship between the LIFE Index and RIVPACS: Putting LIFE into RIVPACS |
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| 353 | Water resources for the future : a summary of the strategy for Thames Region Summary |
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| 354 | SERPLAN development scenarios : the potential impact upon water resources in the SERPLAN region |
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| 355 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
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| 356 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
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| 357 | Water resources for the future : a summary of the strategy for North West Region |
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| 358 | Water resources for the future : a summary of the strategy for South West region |
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| 359 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 360 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 361 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 362 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
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| 363 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 364 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 365 | The physical character of rivers and streams in the UK and Isle of Man |
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| 366 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 367 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 368 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 369 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 370 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 371 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 372 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 373 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 374 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 375 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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