| 401 | Water for the future in Kent : NRA response to the issues and options report |
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| 402 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
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| 403 | Review of flood defence practices on the Somerset Levels and Moors : the report |
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| 404 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 405 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 406 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 407 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 408 | The physical character of rivers and streams in the UK and Isle of Man |
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| 409 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 410 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
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| 411 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 412 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
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| 413 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 414 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 415 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 416 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 417 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 418 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 419 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 420 | A brief history of the River Stour navigation : 1705 to the present day |
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| 421 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
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| 422 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 423 | The land-use planning system and the Water Framework Directive (can't read barcode) |
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| 424 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England; |
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| 425 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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