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576The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
577The Use of Immuno Based Techniques for Chemical Analysis
578Snapshots of the environment : integrated river basin management
579Water from the River Dee : a working partnership
580Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
581River quality in England and Wales : a report of the 1990 survey
582Snapshots of the environment : understanding coastal water quality
583The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
584The evaluation of ingold ion selective ammonium electrode (220/23/T)
585Rivers of the Isle of Wight fact file
586The Influence of Variations in Flow on General Quality Assessment of Rivers
587Stratification in the Severn Estuary- Physical aspects and biological consequences
588The Mersey estuary : a report on environmental quality
589'Sea Vigil' water quality monitoring : the East coast 1992-1993
590Catches of migratory fish in the River Don, Aberdeenshire
591Stream survey and assessment in the Ashford and Folkestone areas
592The 1990 river and estuary classification survey of England and Wales
593The evaluation of an orion ammonium ion selective electrode (220/15/T)
594An Independent Review of the Defra/EA Research and Development Joint
595Anthropogenic Impacts on the Hydrology of Rivers and Lochs
596Dissemination of the Revitalised FEH Rainfall-runoff Method
597General guide to the prevention of water pollution
598Guidance for the Development of Housing on Land Affected by Contamination
599Guidance on the use of Soil Screening Values for Ecological Risk Assessment
600Highway runoff: Effects of soluble pollutants on the ecology of receiving waters