476 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
477 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
478 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
479 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
480 | PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps |
481 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
482 | The River Eden Demonstration Test Catchment (DTC) Data |
483 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
484 | The regulation of salmon angling in Great Britain
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485 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
486 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
487 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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488 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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489 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
490 | The evaluation of Grant/YSU 3800 water quality monitor |
491 | PVC : an evaluation using the Natural Step framework |
492 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
493 | Landfill and the water environment : NRA position statement |
494 | Environment Agency guidance on the conditioning of intermediate level waste |
495 | Quality audit of biological samples for the 1991 river quality survey |
496 | Pesticides in the aquatic environment 1997 full report |
497 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report : November 1994 |
498 | The precious resource : a brief guide to managing our water resources |
499 | Quantification of the relationship between effluent quality and biological quality : final report |
500 | Charging for discharges scheme : guidance to the agricultural industry |