| 401 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
|---|
| 402 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
|---|
| 403 | Water resources for the future : a summary of the strategy for North West Region |
|---|
| 404 | Water resources for the future : a summary of the strategy for South West region |
|---|
| 405 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
|---|
| 406 | Water for the future in Kent : NRA response to the issues and options report |
|---|
| 407 | Review of flood defence practices on the Somerset Levels and Moors : the report |
|---|
| 408 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
|---|
| 409 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
|---|
| 410 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
|---|
| 411 | The physical character of rivers and streams in the UK and Isle of Man |
|---|
| 412 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
|---|
| 413 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
|---|
| 414 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
|---|
| 415 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
|---|
| 416 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
|---|
| 417 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
|---|
| 418 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
|---|
| 419 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
|---|
| 420 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
|---|
| 421 | An investigation into the effects of Alton sewage works on the River Wey North |
|---|
| 422 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
|---|
| 423 | A brief history of the River Stour navigation : 1705 to the present day |
|---|
| 424 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |
|---|
| 425 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
|---|
