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726The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
727Guidance on the use of Bioassays in Ecological Risk Assessment
728The National Rivers Authority employee attitude survey : summary
729The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
730Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
731Pesticides in the aquatic environment 1997 : executive summary
732Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
733Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
734The Louth coastal catchment management plan : final report
735Fine sediment deposition in the River Keer : geomorphological assessment
736Snapshots of the environment : a new environmental approach
737Draft protocol for the derivation of Toxicity Based Consents
738The Loddon catchment, Thames : recommendations for statutory water quality objectives
739Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
740Second Coniston OS map related to the Seismic Survey 1983
741Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
742Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
743Coniston OS map related to the Seismic Survey 1983
744The flood of February 1990 : technical services flood monitoring report
745Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
746Policy and practice for the protection of groundwater : Southern region appendix
747Uses of the water environment: factsheet number six
748River basin planning and the Water Framework Directive
749The Adur and Ouse catchment abstraction management strategy : consultation document
750First annual review of the River Exe catchment management plan