| 426 | Proposals for statutory water quality objectives : report of the National Rivers Authority |
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| 427 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 428 | National Rivers Authority/Po River Basin Authority collaboration programme : improved monitoring systems for river water quality : secretariat meeting, Parma, 13-15 December 1995 : programme and briefing notes |
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| 429 | The law of the National Rivers Authority |
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| 430 | Managing the drought and water resources : key issues statements approved by the board of the NRA June 1992 |
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| 431 | Conservation access recreation annual report 95-96 |
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| 432 | Conservation, access and recreation annual report 93-94 |
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| 433 | Environmental opportunities in low lying coastal areas under a scenario of climate change : final report (255/2/T) |
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| 434 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 435 | A partnership in environmental protection |
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| 436 | Environment Agency special waste statistics 1994-7 |
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| 437 | EC dangerous substances directive : formal monitoring programme 1994 |
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| 438 | Riparian and instream species-habitat relationships (291/3/W) |
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| 439 | Life in rivers |
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| 440 | Sea Trout Investigations Phase 1 Final Report |
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| 441 | Impacts of Nutrients in Estuaries - Phase 2 |
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| 442 | Method for assessing the heritage value of net fisheries |
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| 443 | Menai Strait catchment management plan : consultation report : June 1993 |
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| 444 | Menai Strait catchment management plan : consultation report summary |
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| 445 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : AQC audit : C00158/11 |
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| 446 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : primary audit : C00158/10 |
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| 447 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 15 8/24 |
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| 448 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31) |
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| 449 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 158/23 |
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| 450 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2002 : The Environment Agency (CEH Report Ref: C00158/31) |
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