351 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
352 | Running with the tide : reconciling development pressures with flood risk and the environment |
353 | Water for the future in Kent : NRA response to the issues and options report |
354 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
355 | Review of flood defence practices on the Somerset Levels and Moors : the report |
356 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
357 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
358 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
359 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
360 | The influence of agriculture on the quality of natural waters in England and Wales |
361 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
362 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
363 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
364 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
365 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
366 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
367 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
368 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
369 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
370 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
371 | An investigation into the effects of Alton sewage works on the River Wey North |
372 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
373 | A brief history of the River Stour navigation : 1705 to the present day |
374 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
375 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |