| 401 | Psychomyia pusilla pupal shelters |
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| 402 | Sources of farm pollution and impact on river quality. Volume 1 (001/13/W) |
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| 403 | Windermere South Basin Seismic Survey Data 1983 Section 14 |
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| 404 | Toxicity Reduction Evaluation Case Summary for the Pulp and Paper Industry |
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| 405 | Ullswater Seismic Survey data 1987-Section 03 |
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| 406 | Discharge control by direct toxicity assessment (DTA) |
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| 407 | Windermere South Basin Seismic Survey Data 1983 Section 07 |
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| 408 | Note 3 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
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| 409 | Sustaining our resources : the way forward : water resources strategy |
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| 410 | Focus on Biodiversity Update 2000 |
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| 411 | Wensum DTC General information - Supporting Document Monitoring Kiosk C |
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| 412 | Wensum DTC General information - Supporting Document Monitoring Kiosk B |
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| 413 | Wensum DTC General information - Supporting Document Weather Station 2 |
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| 414 | Wensum DTC General information - Supporting Document Monitoring Kiosk D |
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| 415 | Optical Biomass Sensor |
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| 416 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) - Study Site and Microcosm Layout |
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| 417 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) - Emergence Trap |
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| 418 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) - Enhanced Surface Area Substrate Sampler (ESAS) |
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| 419 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) - Water Column Sampler |
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| 420 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) - Emergence Trap Frame |
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| 421 | Syngenta Pond Mesocosm Studies Materials and Methods (2000-2004) |
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| 422 | Atlantic Salmon Research Trust Newsletter No. 7, July 1974
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| 423 | Mean Trophic Rank: A User's Manual |
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| 424 | Ecdyonurus dispar |
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| 425 | Heavy metals in UK estuaries : PML data and mapping programme. Draft report (365/3/N) |
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