551 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
552 | The River Eden Demonstration Test Catchment (DTC) Data |
553 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
554 | Environmental snapshot for the East of England [version 1] |
555 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
556 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
557 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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558 | Dead zones, live markers: the biological environments of larger U.K. Rivers
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559 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
560 | The evaluation of Grant/YSU 3800 water quality monitor |
561 | PVC : an evaluation using the Natural Step framework |
562 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
563 | Landfill and the water environment : NRA position statement |
564 | The vision for our environment : making it happen |
565 | Environment Agency guidance on the conditioning of intermediate level waste |
566 | Quality audit of biological samples for the 1991 river quality survey |
567 | Pesticides in the aquatic environment 1997 full report |
568 | The precious resource : a brief guide to managing our water resources |
569 | Quantification of the relationship between effluent quality and biological quality : final report |
570 | Charging for discharges scheme : guidance to the agricultural industry |
571 | Priority and other specific polluting substances and the Water Framework Directive |
572 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
573 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
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574 | An Aerial Photograph of Ferry House and The Pearsall Building |
575 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |