| 351 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
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| 352 | Water resources for the future : a summary of the strategy for North West Region |
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| 353 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
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| 354 | Running with the tide : reconciling development pressures with flood risk and the environment |
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| 355 | Water for the future in Kent : NRA response to the issues and options report |
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| 356 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 357 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 358 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 359 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 360 | The physical character of rivers and streams in the UK and Isle of Man |
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| 361 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 362 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 363 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 364 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 365 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 366 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 367 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 368 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 369 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 370 | A brief history of the River Stour navigation : 1705 to the present day |
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| 371 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
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| 372 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 373 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 374 | The land-use planning system and the Water Framework Directive (can't read barcode) |
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| 375 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England; |
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