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676NRA strategy for reducing the concentration of pesticides in controlled waters
677The ecology and management of riverine trees : interim report
678Low-cost modifications of the Crump weir to improve fish passage
679Policy and practice for the protection of groundwater - Thames region appendix
680Policy and practice for the protection of floodplains
681'Sea Vigil' water quality monitoring : the Wash 1992-1993
682Second annual review of the Seaton, Looe and Fowey catchment management plan
683Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
684The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
685Guidance on the use of Bioassays in Ecological Risk Assessment
686The National Rivers Authority employee attitude survey : summary
687The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
688Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
689Pesticides in the aquatic environment 1997 : executive summary
690Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
691Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
692Fine sediment deposition in the River Keer : geomorphological assessment
693Snapshots of the environment : a new environmental approach
694Draft protocol for the derivation of Toxicity Based Consents
695Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
696The flood of February 1990 : technical services flood monitoring report
697Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
698Policy and practice for the protection of groundwater : Southern region appendix
699Uses of the water environment: factsheet number six
700River basin planning and the Water Framework Directive