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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
709Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
710The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
711Guidance on the use of Bioassays in Ecological Risk Assessment
712The National Rivers Authority employee attitude survey : summary
713The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
714Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
715Pesticides in the aquatic environment 1997 : executive summary
716Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
717Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
718Fine sediment deposition in the River Keer : geomorphological assessment
719Snapshots of the environment : a new environmental approach
720Draft protocol for the derivation of Toxicity Based Consents
721Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
722Second Coniston OS map related to the Seismic Survey 1983
723Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
724Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
725Coniston OS map related to the Seismic Survey 1983