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#Title
551Pearl Mussel Image: First out of the blocks
552FWR - User guide for assessing the impact of combined sewer overflows
553The National Centre for Environmental Data and Surveillance : general leaflet
554Project management and the scheme of delegation : a summary guide : April 1995
555The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
556The Use of Immuno Based Techniques for Chemical Analysis
557Snapshots of the environment : integrated river basin management
558Water from the River Dee : a working partnership
559Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
560Snapshots of the environment : understanding coastal water quality
561The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
562The evaluation of ingold ion selective ammonium electrode (220/23/T)
563The Influence of Variations in Flow on General Quality Assessment of Rivers
564Stratification in the Severn Estuary- Physical aspects and biological consequences
565The Mersey estuary : a report on environmental quality
566'Sea Vigil' water quality monitoring : the East coast 1992-1993
567Catches of migratory fish in the River Don, Aberdeenshire
568Stream survey and assessment in the Ashford and Folkestone areas
569The 1990 river and estuary classification survey of England and Wales
570The evaluation of an orion ammonium ion selective electrode (220/15/T)
571An Independent Review of the Defra/EA Research and Development Joint
572Anthropogenic Impacts on the Hydrology of Rivers and Lochs
573Dissemination of the Revitalised FEH Rainfall-runoff Method
574General guide to the prevention of water pollution
575Guidance for the Development of Housing on Land Affected by Contamination