| 601 | An investigation into the incidence of spurting from weeping wall slurry stores |
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| 602 | NRA superannuation report and accounts for the period ended 31 March 1991 |
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| 603 | Further guidance on the environmental assessment of projects |
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| 604 | Assessing the impact of dewatering on water resources |
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| 605 | The use and design of oil separators in surface water drainage systems |
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| 606 | The utilisation of stick-pile otter holts in south east Wales |
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| 607 | Improving the Environment Agency's contribution to wetland bird populations |
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| 608 | Groundwater-surface Water Interactions in the Hyporheic Zone |
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| 609 | River water quality in the Midlands 1994/95 : water quality summary data |
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| 610 | Model Procedures for the Management of Land Contamination |
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| 611 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 612 | Improving the contribution of social science to Flood Risk Management |
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| 613 | The River Tywi catchment management plan : action plan (bilingual) |
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| 614 | Reappraisal of the River Lee to Wheathampstead Mill |
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| 615 | Business requirement specification : integrated accounting system for the (IAS) |
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| 616 | A report on fish production in the National Rivers Authority |
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| 617 | Moston Brook Summary Report for the Evidence and Measures Project |
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| 618 | Corporate Environmental Reporting in the UK Water Sector - A Concise Review |
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| 619 | Environmental planning issues in the North Wessex area |
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| 620 | Strategy for the use of field instrumentation in water quality monitoring |
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| 621 | User notes for the Deben groundwater modelling package |
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| 622 | Anthropogenic Influences on the temperature regime in a chalk river |
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| 623 | London's river (information pack on the River Thames) |
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| 624 | Water and the environment in times of drought |
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| 625 | Water and the environment in times of drought |
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