426 | Conservation and recreation: the Wye challenge: volume 1: report of the River Wye project |
427 | A strategy for implementing the Environment Agency's contribution to the UK Biodiversity Action Plan |
428 | SERPLAN development scenarios : the potential impact upon water resources in the SERPLAN region |
429 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
430 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
431 | Water resources for the future : a summary of the strategy for North West Region |
432 | Water resources for the future : a summary of the strategy for South West region |
433 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
434 | Running with the tide : reconciling development pressures with flood risk and the environment |
435 | Water for the future in Kent : NRA response to the issues and options report |
436 | Review of flood defence practices on the Somerset Levels and Moors : the appendices |
437 | Review of flood defence practices on the Somerset Levels and Moors : the report |
438 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
439 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
440 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
441 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
442 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
443 | The physical character of rivers and streams in the UK and Isle of Man |
444 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
445 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
446 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
447 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
448 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
449 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
450 | A brief history of the River Stour navigation : 1705 to the present day |