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501The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
502The evaluation of ingold ion selective ammonium electrode (220/23/T)
503Rivers of the Isle of Wight fact file
504The Influence of Variations in Flow on General Quality Assessment of Rivers
505Stratification in the Severn Estuary- Physical aspects and biological consequences
506The Mersey estuary : a report on environmental quality
507'Sea Vigil' water quality monitoring : the East coast 1992-1993
508Catches of migratory fish in the River Don, Aberdeenshire
509Lakes, Ponds and Reservoirs in the Southern Region (NRA)
510The 1990 river and estuary classification survey of England and Wales
511The evaluation of an orion ammonium ion selective electrode (220/15/T)
512An Independent Review of the Defra/EA Research and Development Joint
513Anthropogenic Impacts on the Hydrology of Rivers and Lochs
514Dissemination of the Revitalised FEH Rainfall-runoff Method
515General guide to the prevention of water pollution
516Guidance for the Development of Housing on Land Affected by Contamination
517Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
518Life cycle assessment of disposable and reusable nappies in the UK
519Managing the social aspects of flooding: Synthesis Report
520Model For Investigating The Impacts Of Groundwater Abstraction
521National guidelines for the production of NRA regions 1990/91 regional plans
522Operational mechanisms for the protection and enhancement of headwaters
523Policy and practice for the protection of groundwater : regional appendix Welsh region
524Strategic review of development and flood risk : the River Welland catchment
525Strategic review of development and flood risk : the River Witham catchment