| 476 | Entomology For Angler's Course (2009) 15 |
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| 477 | Entomology For Angler's Course (2009) 16 |
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| 478 | Entomology For Angler's Course (2009) 17 |
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| 479 | Entomology For Angler's Course (2009) 18 |
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| 480 | Entomology For Angler's Course (2009) 19 |
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| 481 | Candidate substances requiring Environmental Quality Standards (EQS) |
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| 482 | Deveoplment of a Framework for Assessing the Suitability of Controlled Landfills to Accept Disposal of Solid Low-Level Radioactive Waste: Principles Document |
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| 483 | Metal contamination of sediments an statutory quality objectives |
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| 484 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 485 | Contaminated land and the water environment : report of the National Rivers Authority |
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| 486 | Diversion and entrapment of fish at water intakes and outfalls (Report 1) |
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| 487 | Conservation requirements of southern damselfly in chalkstream and fen habitats |
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| 488 | Summary report on blue-green algae toxin analysis, Toxicity Assessment and reporting to the Environment Agency, 1998 |
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| 489 | Crayfish conservation (378/8/N) : interim report for 1993 |
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| 490 | Waterways Breeding Bird Survey: progress and population trends: 1998 |
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| 491 | Scenarios for the operational implementation of remote sensing of snow by satellites : interim report (207/3/N) |
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| 492 | The physical character of rivers and streams in the UK and Isle of Man |
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| 493 | Data for reed litter decay and aquatic macroinvertebrates colonisation |
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| 494 | Assessment of the distribution of Bembidion testaceum and reasons for its decline |
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| 495 | Bioaccumulation as an approach for detection and monitoring of Red List trace organic contaminants (240/11/Y) : a literature review : interim report |
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| 496 | National Centre for Toxic and Persistent Substances : business case |
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| 497 | Review of Sea Trout Fecundity
|
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| 498 | Algal Monitoring Report 1999. Report summarising freshwater (cyanobacterial) and marine microalgal monitoring during 1999 |
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| 499 | Algal Monitoring Report 2000. Report summarising freshwater (cyanobacterial) and marine microalgal monitoring during 2000 |
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| 500 | Ecotoxicology : a report of the NRA R and D Ecotoxicology Group |
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