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651Guidance on the use of Bioassays in Ecological Risk Assessment
652The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
653Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
654Pesticides in the aquatic environment 1997 : executive summary
655Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
656Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
657The Louth coastal catchment management plan : final report
658Snapshots of the environment : a new environmental approach
659Draft protocol for the derivation of Toxicity Based Consents
660The Loddon catchment, Thames : recommendations for statutory water quality objectives
661Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
662Second Coniston OS map related to the Seismic Survey 1983
663Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
664Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
665Coniston OS map related to the Seismic Survey 1983
666Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
667Policy and practice for the protection of groundwater : Southern region appendix
668Uses of the water environment: factsheet number six
669River basin planning and the Water Framework Directive
670The Adur and Ouse catchment abstraction management strategy : consultation document
671(Bilingual) Assessing the impact of dewatering on water resources
672Catches of Brown Trout in the River Don
673Biodiversity strategy and action plan for the Environment Agency (Thames Region)
674Biological water quality monitoring in the Midlands region
675A natural assets register for the Sankey catchment. Volume 2