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576Low-cost modifications of the Crump weir to improve fish passage
577Policy and practice for the protection of groundwater - Thames region appendix
578'Sea Vigil' water quality monitoring : the Wash 1992-1993
579Second annual review of the Seaton, Looe and Fowey catchment management plan
580The Yarrow catchment : recommendations for statutory water quality objectives
581Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
582The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
583Guidance on the use of Bioassays in Ecological Risk Assessment
584The National Rivers Authority employee attitude survey : summary
585The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
586Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
587The Louth coastal catchment management plan : final report
588Fine sediment deposition in the River Keer : geomorphological assessment
589Draft protocol for the derivation of Toxicity Based Consents
590The Loddon catchment, Thames : recommendations for statutory water quality objectives
591Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
592The flood of February 1990 : technical services flood monitoring report
593Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
594Uses of the water environment: factsheet number six
595River basin planning and the Water Framework Directive
596The Adur and Ouse catchment abstraction management strategy : consultation document
597Flood alleviation proposals for Bakewell and Ashford in the Water
598An update on the Hexham flood alleviation scheme, Autumn 2006
599(Bilingual) Assessing the impact of dewatering on water resources
600Catches of Brown Trout in the River Don