376 | Towards the sustainable use of material resources : an evaluation using the natural step framework |
377 | Water resources for the future : a summary of the strategy for Wales (bilingual) |
378 | Water resources for the future : a summary of the strategy for North West Region |
379 | Water resources for the future : a summary of the strategy for South West region |
380 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
381 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
382 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
383 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
384 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
385 | The influence of agriculture on the quality of natural waters in England and Wales |
386 | The physical character of rivers and streams in the UK and Isle of Man |
387 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
388 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
389 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
390 | Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report |
391 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
392 | The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation |
393 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
394 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
395 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
396 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
397 | An investigation into the effects of Alton sewage works on the River Wey North |
398 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
399 | A brief history of the River Stour navigation : 1705 to the present day |
400 | The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish |