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576Disturbing the season's due: plankton periodicity in Grassmere, 1987
577The Evaluation of Acoustic Doppler Current Profiler Equipment
578Modelling phytoplankton development in the proposed Cardiff Bay Barrage
579Dead zones, live markers: the biological environments of larger U.K. Rivers
580The Impact Of Particulate Outputs Associated With Timber Harvesting
581The evaluation of Grant/YSU 3800 water quality monitor
582PVC : an evaluation using the Natural Step framework
583Recommendations For The Processing And Presentation Of Groundwater Quality Data
584Landfill and the water environment : NRA position statement
585The vision for our environment : making it happen
586Environment Agency guidance on the conditioning of intermediate level waste
587Quality audit of biological samples for the 1991 river quality survey
588Pesticides in the aquatic environment 1997 full report
589The precious resource : a brief guide to managing our water resources
590Quantification of the relationship between effluent quality and biological quality : final report
591Charging for discharges scheme : guidance to the agricultural industry
592Priority and other specific polluting substances and the Water Framework Directive
593'Sea Vigil' water quality monitoring : the Humber estuary 1994
594Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
595An Aerial Photograph of Ferry House and The Pearsall Building
596Review of existing practices for fluvial grass management throughout the NRA (213/1/Y)
597The interpretation of rod and net catch data
598Research and development in the Environment Agency : a short guide
599Problems with sea trout and salmon in the Western Highlands
600Clear Options towards an operational model for the Lee Valley Reservoirs