| 476 | Charging for discharges scheme : guidance to the agricultural industry |
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| 477 | Priority and other specific polluting substances and the Water Framework Directive |
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| 478 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 479 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 480 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 481 | Research and development in the Environment Agency : a short guide |
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| 482 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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| 483 | The Cam catchment : recommendations for statutory water quality objectives |
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| 484 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 485 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
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| 486 | The National Centre for Toxic and Persistent Substances |
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| 487 | Algal blooms in the Lower Tees- Perspectives and prospects
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| 488 | Acidification of freshwaters: the threat and its mitigation |
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| 489 | Pearl Mussel Image: First out of the blocks |
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| 490 | FWR - User guide for assessing the impact of combined sewer overflows |
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| 491 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 492 | The Use of Immuno Based Techniques for Chemical Analysis |
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| 493 | Water from the River Dee : a working partnership |
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| 494 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
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| 495 | River quality in England and Wales : a report of the 1990 survey |
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| 496 | Snapshots of the environment : understanding coastal water quality |
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| 497 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
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| 498 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
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| 499 | Rivers of the Isle of Wight fact file |
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| 500 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
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