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676Low-cost modifications of the Crump weir to improve fish passage
677Policy and practice for the protection of groundwater - Thames region appendix
678Policy and practice for the protection of floodplains
679'Sea Vigil' water quality monitoring : the Wash 1992-1993
680Second annual review of the Seaton, Looe and Fowey catchment management plan
681The Yarrow catchment : recommendations for statutory water quality objectives
682Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
683The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
684The National Rivers Authority employee attitude survey : summary
685The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
686Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
687Pesticides in the aquatic environment 1997 : executive summary
688Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
689The Louth coastal catchment management plan : final report
690Fine sediment deposition in the River Keer : geomorphological assessment
691Snapshots of the environment : a new environmental approach
692Draft protocol for the derivation of Toxicity Based Consents
693The Loddon catchment, Thames : recommendations for statutory water quality objectives
694Second Coniston OS map related to the Seismic Survey 1983
695Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
696Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
697Coniston OS map related to the Seismic Survey 1983
698The flood of February 1990 : technical services flood monitoring report
699Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
700Uses of the water environment: factsheet number six