| 451 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
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| 452 | The evaluation of Grant/YSU 3800 water quality monitor |
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| 453 | PVC : an evaluation using the Natural Step framework |
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| 454 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 455 | Landfill and the water environment : NRA position statement |
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| 456 | The vision for our environment : making it happen |
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| 457 | Environment Agency guidance on the conditioning of intermediate level waste |
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| 458 | Quality audit of biological samples for the 1991 river quality survey |
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| 459 | Pesticides in the aquatic environment 1997 full report |
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| 460 | The precious resource : a brief guide to managing our water resources |
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| 461 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 462 | Charging for discharges scheme : guidance to the agricultural industry |
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| 463 | Priority and other specific polluting substances and the Water Framework Directive |
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| 464 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
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| 465 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 466 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 467 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 468 | The interpretation of rod and net catch data |
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| 469 | Research and development in the Environment Agency : a short guide |
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| 470 | Problems with sea trout and salmon in the Western Highlands |
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| 471 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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| 472 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 473 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
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| 474 | The National Centre for Toxic and Persistent Substances |
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| 475 | Acidification of freshwaters: the threat and its mitigation |
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