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651NRA strategy for reducing the concentration of pesticides in controlled waters
652The ecology and management of riverine trees : interim report
653Low-cost modifications of the Crump weir to improve fish passage
654Policy and practice for the protection of groundwater - Thames region appendix
655'Sea Vigil' water quality monitoring : the Wash 1992-1993
656Second annual review of the Seaton, Looe and Fowey catchment management plan
657The Yarrow catchment : recommendations for statutory water quality objectives
658Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
659The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
660Guidance on the use of Bioassays in Ecological Risk Assessment
661The National Rivers Authority employee attitude survey : summary
662Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
663Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
664Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
665The Louth coastal catchment management plan : final report
666Fine sediment deposition in the River Keer : geomorphological assessment
667Draft protocol for the derivation of Toxicity Based Consents
668The Loddon catchment, Thames : recommendations for statutory water quality objectives
669Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
670Second Coniston OS map related to the Seismic Survey 1983
671Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
672Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
673Coniston OS map related to the Seismic Survey 1983
674The flood of February 1990 : technical services flood monitoring report
675Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework