501 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
502 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
503 | PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps |
504 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
505 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
506 | The regulation of salmon angling in Great Britain
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507 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
508 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
509 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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510 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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511 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
512 | The evaluation of Grant/YSU 3800 water quality monitor |
513 | PVC : an evaluation using the Natural Step framework |
514 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
515 | Landfill and the water environment : NRA position statement |
516 | Environment Agency guidance on the conditioning of intermediate level waste |
517 | Quality audit of biological samples for the 1991 river quality survey |
518 | Pesticides in the aquatic environment 1997 full report |
519 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report : November 1994 |
520 | The precious resource : a brief guide to managing our water resources |
521 | Charging for discharges scheme : guidance to the agricultural industry |
522 | Priority and other specific polluting substances and the Water Framework Directive |
523 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
524 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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525 | An Aerial Photograph of Ferry House and The Pearsall Building |