| 476 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
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| 477 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
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| 478 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
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| 479 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
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| 480 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
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| 481 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
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| 482 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
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| 483 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
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| 484 | The River Eden Demonstration Test Catchment (DTC) Data |
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| 485 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
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| 486 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
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| 487 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
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| 488 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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| 489 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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| 490 | The evaluation of Grant/YSU 3800 water quality monitor |
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| 491 | PVC : an evaluation using the Natural Step framework |
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| 492 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 493 | Quality audit of biological samples for the 1991 river quality survey |
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| 494 | Pesticides in the aquatic environment 1997 full report |
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| 495 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 496 | Charging for discharges scheme : guidance to the agricultural industry |
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| 497 | Priority and other specific polluting substances and the Water Framework Directive |
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| 498 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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| 499 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
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| 500 | Research and development in the Environment Agency : a short guide |
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