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526Clear Options towards an operational model for the Lee Valley Reservoirs
527The Cam catchment : recommendations for statutory water quality objectives
528The River Cam catchment management plan : annual monitoring report
529Guidance for estimating the air quality impact of stationary sources - GN 24
530Introductory guidance on the Agency's contribution to sustainable development (SD1)
531The National Centre for Toxic and Persistent Substances
532Algal blooms in the Lower Tees- Perspectives and prospects
533Acidification of freshwaters: the threat and its mitigation
534Pearl Mussel Image: First out of the blocks
535FWR - User guide for assessing the impact of combined sewer overflows
536The National Centre for Environmental Data and Surveillance : general leaflet
537Project management and the scheme of delegation : a summary guide : April 1995
538The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
539The Use of Immuno Based Techniques for Chemical Analysis
540Snapshots of the environment : integrated river basin management
541Water from the River Dee : a working partnership
542Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
543Snapshots of the environment : understanding coastal water quality
544The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
545The evaluation of ingold ion selective ammonium electrode (220/23/T)
546The Influence of Variations in Flow on General Quality Assessment of Rivers
547Stratification in the Severn Estuary- Physical aspects and biological consequences
548The Mersey estuary : a report on environmental quality
549'Sea Vigil' water quality monitoring : the East coast 1992-1993
550Catches of migratory fish in the River Don, Aberdeenshire