601 | The utilisation of stick-pile otter holts in south east Wales |
602 | Improving the Environment Agency's contribution to wetland bird populations |
603 | Groundwater-surface Water Interactions in the Hyporheic Zone |
604 | River water quality in the Midlands 1994/95 : water quality summary data |
605 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
606 | Improving the contribution of social science to Flood Risk Management |
607 | The River Tywi catchment management plan : action plan (bilingual) |
608 | Reappraisal of the River Lee to Wheathampstead Mill |
609 | Business requirement specification : integrated accounting system for the (IAS) |
610 | A report on fish production in the National Rivers Authority |
611 | Moston Brook Summary Report for the Evidence and Measures Project |
612 | Corporate Environmental Reporting in the UK Water Sector - A Concise Review |
613 | Strategy for the use of field instrumentation in water quality monitoring |
614 | Anthropogenic Influences on the temperature regime in a chalk river |
615 | London's river (information pack on the River Thames) |
616 | Water and the environment in times of drought |
617 | Macroinvertebrates of the River Nar : Great Ouse catchment : draft report |
618 | A strategy for the management of salmon in England and Wales |
619 | Algae or sewage? : helping you tell the difference |
620 | The Role Of Bankside Habitat In River Ecology |
621 | Economic changes to the value of water environment : draft final report |
622 | NRA superannuation report and accounts for the period ended 31 March 1990 |
623 | Wash zone report. Part 1 : the Wash NRA monitoring review |
624 | Broadland flood alleviation strategy : the programme for flood defence works |
625 | Water quality 2000 : a strategy for the water quality function |