| 526 | PVC : an evaluation using the Natural Step framework |
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| 527 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 528 | Landfill and the water environment : NRA position statement |
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| 529 | The vision for our environment : making it happen |
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| 530 | Environment Agency guidance on the conditioning of intermediate level waste |
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| 531 | Quality audit of biological samples for the 1991 river quality survey |
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| 532 | Pesticides in the aquatic environment 1997 full report |
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| 533 | The precious resource : a brief guide to managing our water resources |
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| 534 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 535 | Charging for discharges scheme : guidance to the agricultural industry |
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| 536 | Priority and other specific polluting substances and the Water Framework Directive |
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| 537 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 538 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 539 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 540 | The interpretation of rod and net catch data |
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| 541 | Research and development in the Environment Agency : a short guide |
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| 542 | Problems with sea trout and salmon in the Western Highlands |
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| 543 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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| 544 | The Cam catchment : recommendations for statutory water quality objectives |
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| 545 | The River Cam catchment management plan : annual monitoring report |
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| 546 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 547 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
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| 548 | The National Centre for Toxic and Persistent Substances |
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| 549 | Algal blooms in the Lower Tees- Perspectives and prospects
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| 550 | Acidification of freshwaters: the threat and its mitigation |
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