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701Contribution of small streams to potential fish production in the Conwy catchment
702NRA strategy for reducing the concentration of pesticides in controlled waters
703The ecology and management of riverine trees : interim report
704Low-cost modifications of the Crump weir to improve fish passage
705Policy and practice for the protection of groundwater - Thames region appendix
706Policy and practice for the protection of floodplains
707'Sea Vigil' water quality monitoring : the Wash 1992-1993
708Second annual review of the Seaton, Looe and Fowey catchment management plan
709The Yarrow catchment : recommendations for statutory water quality objectives
710Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
711The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
712Guidance on the use of Bioassays in Ecological Risk Assessment
713The National Rivers Authority employee attitude survey : summary
714The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
715Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
716Pesticides in the aquatic environment 1997 : executive summary
717Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
718Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
719The Louth coastal catchment management plan : final report
720Fine sediment deposition in the River Keer : geomorphological assessment
721Snapshots of the environment : a new environmental approach
722Draft protocol for the derivation of Toxicity Based Consents
723The Loddon catchment, Thames : recommendations for statutory water quality objectives
724Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
725Second Coniston OS map related to the Seismic Survey 1983