401 | Water resources for the future : a summary of the strategy for Thames Region Summary |
402 | Conservation and recreation: the Wye challenge: volume 1: report of the River Wye project |
403 | A strategy for implementing the Environment Agency's contribution to the UK Biodiversity Action Plan |
404 | SERPLAN development scenarios : the potential impact upon water resources in the SERPLAN region |
405 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
406 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
407 | Water resources for the future : a summary of the strategy for North West Region |
408 | Water resources for the future : a summary of the strategy for South West region |
409 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
410 | Running with the tide : reconciling development pressures with flood risk and the environment |
411 | Water for the future in Kent : NRA response to the issues and options report |
412 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
413 | Review of flood defence practices on the Somerset Levels and Moors : the report |
414 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
415 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
416 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
417 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
418 | The influence of agriculture on the quality of natural waters in England and Wales |
419 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
420 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
421 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
422 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
423 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
424 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
425 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |