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576Fish Guide 1997/98 A Guide to day ticket fisheries in the Midlands
577Flood warning information for the river Witham and tributaries in Lincolnshire
578Environmental assessment of selected abandoned minewaters in the North East region
579Conservation and development of the River Eden spring salmon population
580Flood warning information for North Surrey : The Bournes catchment
581Habitat preferences of the bullhead (Cottus gobio) in some Norfolk rivers
582England's river : a guide to the Thames from Remenham to Cookham
583Regulation of dioxin releases from the Runcorn operations of ICI and EVC
584Investigation of mercury contamination in the Red River catchment, West Cornwall
585An investigation into the incidence of spurting from weeping wall slurry stores
586NRA superannuation report and accounts for the period ended 31 March 1991
587Further guidance on the environmental assessment of projects
588Assessing the impact of dewatering on water resources
589The use and design of oil separators in surface water drainage systems
590The utilisation of stick-pile otter holts in south east Wales
591Improving the Environment Agency's contribution to wetland bird populations
592Groundwater-surface Water Interactions in the Hyporheic Zone
593River water quality in the Midlands 1994/95 : water quality summary data
594Model Procedures for the Management of Land Contamination
595Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality
596Reappraisal of the River Lee to Wheathampstead Mill
597Business requirement specification : integrated accounting system for the (IAS)
598Moston Brook Summary Report for the Evidence and Measures Project
599Environmental planning issues in the North Wessex area
600Strategy for the use of field instrumentation in water quality monitoring