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476Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
477River quality in England and Wales : a report of the 1990 survey
478Snapshots of the environment : understanding coastal water quality
479The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
480The evaluation of ingold ion selective ammonium electrode (220/23/T)
481Rivers of the Isle of Wight fact file
482Stratification in the Severn Estuary- Physical aspects and biological consequences
483'Sea Vigil' water quality monitoring : the East coast 1992-1993
484Lakes, Ponds and Reservoirs in the Southern Region (NRA)
485The 1990 river and estuary classification survey of England and Wales
486The evaluation of an orion ammonium ion selective electrode (220/15/T)
487An Independent Review of the Defra/EA Research and Development Joint
488Anthropogenic Impacts on the Hydrology of Rivers and Lochs
489Dissemination of the Revitalised FEH Rainfall-runoff Method
490General guide to the prevention of water pollution
491Guidance on the use of Soil Screening Values for Ecological Risk Assessment
492Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
493Life cycle assessment of disposable and reusable nappies in the UK
494Managing the social aspects of flooding: Synthesis Report
495National guidelines for the production of NRA regions 1990/91 regional plans
496Operational mechanisms for the protection and enhancement of headwaters
497Procurement legislation and the NRA : a brief guide
498Strategic review of development and flood risk : the River Welland catchment
499Strategic review of development and flood risk : the River Witham catchment
500Survey of copper speciation in the Great Ouse estuary