| 451 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
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| 452 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
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| 453 | PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps |
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| 454 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
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| 455 | The River Eden Demonstration Test Catchment (DTC) Data |
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| 456 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
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| 457 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
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| 458 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
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| 459 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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| 460 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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| 461 | The evaluation of Grant/YSU 3800 water quality monitor |
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| 462 | PVC : an evaluation using the Natural Step framework |
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| 463 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 464 | Quality audit of biological samples for the 1991 river quality survey |
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| 465 | Pesticides in the aquatic environment 1997 full report |
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| 466 | Charging for discharges scheme : guidance to the agricultural industry |
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| 467 | Priority and other specific polluting substances and the Water Framework Directive |
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| 468 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 469 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 470 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 471 | Research and development in the Environment Agency : a short guide |
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| 472 | Clear Options towards an operational model for the Lee Valley Reservoirs |
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| 473 | The Cam catchment : recommendations for statutory water quality objectives |
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| 474 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 475 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
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