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576Flood warning information for the river Witham and tributaries in Lincolnshire
577Environmental assessment of selected abandoned minewaters in the North East region
578Conservation and development of the River Eden spring salmon population
579Flood warning information for North Surrey : The Bournes catchment
580Habitat preferences of the bullhead (Cottus gobio) in some Norfolk rivers
581England's river : a guide to the Thames from Remenham to Cookham
582Regulation of dioxin releases from the Runcorn operations of ICI and EVC
583Investigation of mercury contamination in the Red River catchment, West Cornwall
584An investigation into the incidence of spurting from weeping wall slurry stores
585NRA superannuation report and accounts for the period ended 31 March 1991
586Further guidance on the environmental assessment of projects
587Assessing the impact of dewatering on water resources
588The use and design of oil separators in surface water drainage systems
589The utilisation of stick-pile otter holts in south east Wales
590Improving the Environment Agency's contribution to wetland bird populations
591River water quality in the Midlands 1994/95 : water quality summary data
592Model Procedures for the Management of Land Contamination
593Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality
594Reappraisal of the River Lee to Wheathampstead Mill
595Business requirement specification : integrated accounting system for the (IAS)
596Moston Brook Summary Report for the Evidence and Measures Project
597Environmental planning issues in the North Wessex area
598Strategy for the use of field instrumentation in water quality monitoring
599Anthropogenic Influences on the temperature regime in a chalk river
600London's river (information pack on the River Thames)