| 301 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
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| 302 | Water for the future in Kent : NRA response to the issues and options report |
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| 303 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 304 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 305 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 306 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 307 | The physical character of rivers and streams in the UK and Isle of Man |
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| 308 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 309 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 310 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 311 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
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| 312 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
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| 313 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 314 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 315 | An investigation into the effects of Alton sewage works on the River Wey North |
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| 316 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 317 | A brief history of the River Stour navigation : 1705 to the present day |
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| 318 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
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| 319 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 320 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 321 | The land-use planning system and the Water Framework Directive (can't read barcode) |
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| 322 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England; |
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| 323 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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| 324 | Report for Anglian Water, NRA Unit on the uses of the Orwell and the Stour Estuaries and the use of the mathematical model to derive long term consent limits for all inputs to Orwell Estuary |
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| 325 | Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group |
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