| 4626 | Direct toxicity assessment proficiency scheme (DTAPS) : Document 1 : Issue 5 |
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| 4627 | Direct toxicity assessment proficiency scheme (DTAPS) : Document 3 : Issue 10 |
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| 4628 | Ecotoxicology : a report of the NRA R and D Ecotoxicology Group |
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| 4629 | Ecotoxicology : new approaches |
|---|
| 4630 | Investigating Links Between Bacterial Exotoxins and Unexplained Fish Kills: Phase 3 |
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| 4631 | Hydrodat : groundwater monitoring database system. Guidelines |
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| 4632 | The results of fish telemetry trails in the river Tawe estuary, 1991 |
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| 4633 | Analysis of airborne platform specifications and operations for the National Rivers Authority by Atlantique Reconnaissance Ltd |
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| 4634 | Aircraft utilisation study |
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| 4635 | Further development of airborne remote sensing techniques; |
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| 4636 | Effective flood warning the Australian way : the Winston Churchill Travelling Fellowship visit to Australia and New Zealand 23 October - 27 November 1994 |
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| 4637 | Guardians of the water environment (NRA Thames Region) |
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| 4638 | Quarterly review : Southern region 1993/94 |
|---|
| 4639 | River Thames : tips for visiting boaters |
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| 4640 | Round-up of National and Regional media coverage of the Landfill Tax introduction and Flytipping crack down |
|---|
| 4641 | Study of the River Stour, Kent |
|---|
| 4642 | The source : a guide to NRA services |
|---|
| 4643 | A report of the conservation and recreation market testing project on : conservation operational advice, conservation collaborative projects, recreational collaborative projects, landscape assessment |
|---|
| 4644 | Field validation of algal toxin test kit : final draft report. Appendices - Interim reports (349/8/A) |
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| 4645 | Hiz, Oughton and Purwell environmental appraisal. Vol 1 appendices |
|---|
| 4646 | Hiz, Oughton and Purwell environmental appraisal. Vol 3 appendices |
|---|
| 4647 | River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man |
|---|
| 4648 | Assessment of snow cover change : interim report (207/8/N) |
|---|
| 4649 | Influences of cloud cover on utility of NOAA/AVHRR imagery for snow cover monitoring over England and Wales : interim report (207/2/N) |
|---|
| 4650 | Code of practice for handling data : a discussion document (PRS 2274-M) |
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