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626The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
627Guidance on the use of Bioassays in Ecological Risk Assessment
628The National Rivers Authority employee attitude survey : summary
629The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
630Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
631Pesticides in the aquatic environment 1997 : executive summary
632Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
633Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
634The Louth coastal catchment management plan : final report
635Fine sediment deposition in the River Keer : geomorphological assessment
636Snapshots of the environment : a new environmental approach
637Draft protocol for the derivation of Toxicity Based Consents
638Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
639Second Coniston OS map related to the Seismic Survey 1983
640Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
641Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
642Coniston OS map related to the Seismic Survey 1983
643The flood of February 1990 : technical services flood monitoring report
644Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
645River basin planning and the Water Framework Directive
646Flood alleviation proposals for Bakewell and Ashford in the Water
647An update on the Hexham flood alleviation scheme, Autumn 2006
648(Bilingual) Assessing the impact of dewatering on water resources
649Catches of Brown Trout in the River Don
650Environmental snapshot for the East of England [2000]