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526The National Centre for Environmental Data and Surveillance : general leaflet
527Project management and the scheme of delegation : a summary guide : April 1995
528The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
529The Use of Immuno Based Techniques for Chemical Analysis
530Water from the River Dee : a working partnership
531Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
532River quality in England and Wales : a report of the 1990 survey
533Snapshots of the environment : understanding coastal water quality
534The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
535The evaluation of ingold ion selective ammonium electrode (220/23/T)
536The Influence of Variations in Flow on General Quality Assessment of Rivers
537Stratification in the Severn Estuary- Physical aspects and biological consequences
538The Mersey estuary : a report on environmental quality
539'Sea Vigil' water quality monitoring : the East coast 1992-1993
540Catches of migratory fish in the River Don, Aberdeenshire
541Stream survey and assessment in the Ashford and Folkestone areas
542The 1990 river and estuary classification survey of England and Wales
543The evaluation of an orion ammonium ion selective electrode (220/15/T)
544An Independent Review of the Defra/EA Research and Development Joint
545Anthropogenic Impacts on the Hydrology of Rivers and Lochs
546Dissemination of the Revitalised FEH Rainfall-runoff Method
547General guide to the prevention of water pollution
548Guidance for the Development of Housing on Land Affected by Contamination
549Guidance on the use of Soil Screening Values for Ecological Risk Assessment
550Highway runoff: Effects of soluble pollutants on the ecology of receiving waters