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651The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
652Guidance on the use of Bioassays in Ecological Risk Assessment
653The National Rivers Authority employee attitude survey : summary
654The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
655Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
656Pesticides in the aquatic environment 1997 : executive summary
657Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
658Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
659The Louth coastal catchment management plan : final report
660Fine sediment deposition in the River Keer : geomorphological assessment
661Snapshots of the environment : a new environmental approach
662Draft protocol for the derivation of Toxicity Based Consents
663The Loddon catchment, Thames : recommendations for statutory water quality objectives
664Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
665Second Coniston OS map related to the Seismic Survey 1983
666Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
667Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
668Coniston OS map related to the Seismic Survey 1983
669The flood of February 1990 : technical services flood monitoring report
670Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
671Policy and practice for the protection of groundwater : Southern region appendix
672Uses of the water environment: factsheet number six
673River basin planning and the Water Framework Directive
674Flood alleviation proposals for Bakewell and Ashford in the Water
675An update on the Hexham flood alleviation scheme, Autumn 2006