| 6426 | Environmental impact of hypolimnial releases from Llyn Brianne |
|---|
| 6427 | Water plants : their function and management |
|---|
| 6428 | Review of Sea Trout Fecundity
|
|---|
| 6429 | A review of available information sources for assessing the hazards and risks of chemical substances in the environment. Final report : recommendations for the acquistion of certain sources of environmental data |
|---|
| 6430 | A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study |
|---|
| 6431 | Algal Monitoring Report 1999. Report summarising freshwater (cyanobacterial) and marine microalgal monitoring during 1999 |
|---|
| 6432 | Algal Monitoring Report 2000. Report summarising freshwater (cyanobacterial) and marine microalgal monitoring during 2000 |
|---|
| 6433 | Direct toxicity assessment : a step towards better environmental protection within the UK : business strategy |
|---|
| 6434 | Direct toxicity assessment proficiency scheme (DTAPS) : Document 1 : Issue 5 |
|---|
| 6435 | Direct toxicity assessment proficiency scheme (DTAPS) : Document 3 : Issue 10 |
|---|
| 6436 | Ecotoxicology : a report of the NRA R and D Ecotoxicology Group |
|---|
| 6437 | Ecotoxicology : new approaches |
|---|
| 6438 | Investigating Links Between Bacterial Exotoxins and Unexplained Fish Kills: Phase 3 |
|---|
| 6439 | Hydrodat : groundwater monitoring database system. Guidelines |
|---|
| 6440 | Pesticides 2000 : a summary of monitoring of the aquatic environment in England and Wales |
|---|
| 6441 | Analysis of methyl tertiary-butyl ether (MTBE) and other petroleum oxygenates in water |
|---|
| 6442 | Hydrometric asset condition survey action plan 1998 - 2001 : annex 1 |
|---|
| 6443 | The results of fish telemetry trails in the river Tawe estuary, 1991 |
|---|
| 6444 | Analysis of airborne platform specifications and operations for the National Rivers Authority by Atlantique Reconnaissance Ltd |
|---|
| 6445 | Compact airborne spectrographic imager : CASI |
|---|
| 6446 | Aircraft utilisation study |
|---|
| 6447 | Coastal baseline survey January/February 1995 : results |
|---|
| 6448 | Gulliver |
|---|
| 6449 | National marine baseline survey 1995 : littoral cell 10 : Bardsey Sound to Great Orme |
|---|
| 6450 | Validation of statutory sampling sites using aerial surveillance : case study 4 |
|---|
