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526NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group
527Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report
528Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922
529PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps
530POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS
531The River Eden Demonstration Test Catchment (DTC) Data
5321967 - IBP Lake George, Uganda - starting to build the bedroom block
533Environmental snapshot for the East of England [version 1]
534Disturbing the season's due: plankton periodicity in Grassmere, 1987
535The Evaluation of Acoustic Doppler Current Profiler Equipment
536Modelling phytoplankton development in the proposed Cardiff Bay Barrage
537Dead zones, live markers: the biological environments of larger U.K. Rivers
538The Impact Of Particulate Outputs Associated With Timber Harvesting
539The evaluation of Grant/YSU 3800 water quality monitor
540PVC : an evaluation using the Natural Step framework
541Recommendations For The Processing And Presentation Of Groundwater Quality Data
542Landfill and the water environment : NRA position statement
543The vision for our environment : making it happen
544Environment Agency guidance on the conditioning of intermediate level waste
545Quality audit of biological samples for the 1991 river quality survey
546Pesticides in the aquatic environment 1997 full report
547The precious resource : a brief guide to managing our water resources
548Quantification of the relationship between effluent quality and biological quality : final report
549Charging for discharges scheme : guidance to the agricultural industry
550Priority and other specific polluting substances and the Water Framework Directive