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601The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
602The evaluation of ingold ion selective ammonium electrode (220/23/T)
603Rivers of the Isle of Wight fact file
604The Influence of Variations in Flow on General Quality Assessment of Rivers
605Stratification in the Severn Estuary- Physical aspects and biological consequences
606The Mersey estuary : a report on environmental quality
607'Sea Vigil' water quality monitoring : the East coast 1992-1993
608Catches of migratory fish in the River Don, Aberdeenshire
609Lakes, Ponds and Reservoirs in the Southern Region (NRA)
610The 1990 river and estuary classification survey of England and Wales
611The evaluation of an orion ammonium ion selective electrode (220/15/T)
612An Independent Review of the Defra/EA Research and Development Joint
613Anthropogenic Impacts on the Hydrology of Rivers and Lochs
614Dissemination of the Revitalised FEH Rainfall-runoff Method
615General guide to the prevention of water pollution
616Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
617Life cycle assessment of disposable and reusable nappies in the UK
618Managing the social aspects of flooding: Synthesis Report
619Model For Investigating The Impacts Of Groundwater Abstraction
620National guidelines for the production of NRA regions 1990/91 regional plans
621Operational mechanisms for the protection and enhancement of headwaters
622Policy and practice for the protection of groundwater : regional appendix Welsh region
623Procurement legislation and the NRA : a brief guide
624Strategic review of development and flood risk : the River Welland catchment
625Strategic review of development and flood risk : the River Witham catchment