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551Introductory guidance on the Agency's contribution to sustainable development (SD1)
552The National Centre for Toxic and Persistent Substances
553Algal blooms in the Lower Tees- Perspectives and prospects
554Acidification of freshwaters: the threat and its mitigation
555Pearl Mussel Image: First out of the blocks
556FWR - User guide for assessing the impact of combined sewer overflows
557The National Centre for Environmental Data and Surveillance : general leaflet
558Project management and the scheme of delegation : a summary guide : April 1995
559The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
560The Use of Immuno Based Techniques for Chemical Analysis
561Water from the River Dee : a working partnership
562Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
563River quality in England and Wales : a report of the 1990 survey
564Snapshots of the environment : understanding coastal water quality
565The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
566The evaluation of ingold ion selective ammonium electrode (220/23/T)
567The Influence of Variations in Flow on General Quality Assessment of Rivers
568Stratification in the Severn Estuary- Physical aspects and biological consequences
569The Mersey estuary : a report on environmental quality
570'Sea Vigil' water quality monitoring : the East coast 1992-1993
571Catches of migratory fish in the River Don, Aberdeenshire
572Stream survey and assessment in the Ashford and Folkestone areas
573The 1990 river and estuary classification survey of England and Wales
574The evaluation of an orion ammonium ion selective electrode (220/15/T)
575An Independent Review of the Defra/EA Research and Development Joint