| 326 | Rising groundwater levels in the chalk - basal sands aquifer of the central london basins |
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| 327 | Water resources for the future : a summary of the strategy for Thames Region |
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| 328 | Water resources for the future : a summary of the strategy for Thames Region Summary |
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| 329 | SERPLAN development scenarios : the potential impact upon water resources in the SERPLAN region |
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| 330 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
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| 331 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
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| 332 | Water resources for the future : a summary of the strategy for North West Region |
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| 333 | Water resources for the future : a summary of the strategy for South West region |
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| 334 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
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| 335 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 336 | Review of flood defence practices on the Somerset Levels and Moors : the report |
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| 337 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 338 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 339 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 340 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
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| 341 | The physical character of rivers and streams in the UK and Isle of Man |
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| 342 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 343 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 344 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
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| 345 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 346 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 347 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 348 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 349 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 350 | A brief history of the River Stour navigation : 1705 to the present day |
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