| 476 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
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| 477 | The River Eden Demonstration Test Catchment (DTC) Data |
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| 478 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
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| 479 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
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| 480 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
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| 481 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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| 482 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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| 483 | The evaluation of Grant/YSU 3800 water quality monitor |
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| 484 | PVC : an evaluation using the Natural Step framework |
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| 485 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 486 | Quality audit of biological samples for the 1991 river quality survey |
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| 487 | Pesticides in the aquatic environment 1997 full report |
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| 488 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 489 | Charging for discharges scheme : guidance to the agricultural industry |
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| 490 | Priority and other specific polluting substances and the Water Framework Directive |
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| 491 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 492 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 493 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 494 | Research and development in the Environment Agency : a short guide |
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| 495 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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| 496 | The Cam catchment : recommendations for statutory water quality objectives |
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| 497 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 498 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
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| 499 | The National Centre for Toxic and Persistent Substances |
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| 500 | Algal blooms in the Lower Tees- Perspectives and prospects
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