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551The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
552The evaluation of ingold ion selective ammonium electrode (220/23/T)
553Rivers of the Isle of Wight fact file
554The Influence of Variations in Flow on General Quality Assessment of Rivers
555Stratification in the Severn Estuary- Physical aspects and biological consequences
556'Sea Vigil' water quality monitoring : the East coast 1992-1993
557Catches of migratory fish in the River Don, Aberdeenshire
558Stream survey and assessment in the Ashford and Folkestone areas
559Lakes, Ponds and Reservoirs in the Southern Region (NRA)
560The 1990 river and estuary classification survey of England and Wales
561The evaluation of an orion ammonium ion selective electrode (220/15/T)
562An Independent Review of the Defra/EA Research and Development Joint
563Anthropogenic Impacts on the Hydrology of Rivers and Lochs
564Dissemination of the Revitalised FEH Rainfall-runoff Method
565General guide to the prevention of water pollution
566Guidance on the use of Soil Screening Values for Ecological Risk Assessment
567Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
568Life cycle assessment of disposable and reusable nappies in the UK
569Managing the social aspects of flooding: Synthesis Report
570Model For Investigating The Impacts Of Groundwater Abstraction
571National guidelines for the production of NRA regions 1990/91 regional plans
572Operational mechanisms for the protection and enhancement of headwaters
573Procurement legislation and the NRA : a brief guide
574Strategic review of development and flood risk : the River Welland catchment
575Strategic review of development and flood risk : the River Witham catchment