| 801 | The River Tywi catchment management plan : action plan (bilingual) |
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| 802 | Reappraisal of the River Lee to Wheathampstead Mill |
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| 803 | Business requirement specification : integrated accounting system for the (IAS) |
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| 804 | A report on fish production in the National Rivers Authority |
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| 805 | Moston Brook Summary Report for the Evidence and Measures Project |
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| 806 | Corporate Environmental Reporting in the UK Water Sector - A Concise Review |
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| 807 | Environmental planning issues in the North Wessex area |
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| 808 | Strategy for the use of field instrumentation in water quality monitoring |
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| 809 | Anthropogenic Influences on the temperature regime in a chalk river |
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| 810 | London's river (information pack on the River Thames) |
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| 811 | Water and the environment in times of drought |
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| 812 | Macroinvertebrates of the River Nar : Great Ouse catchment : draft report |
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| 813 | Water and the environment in times of drought |
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| 814 | A strategy for the management of salmon in England and Wales |
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| 815 | Algae or sewage? : helping you tell the difference |
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| 816 | The Role Of Bankside Habitat In River Ecology |
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| 817 | Economic changes to the value of water environment : draft final report |
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| 818 | NRA superannuation report and accounts for the period ended 31 March 1990 |
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| 819 | Wash zone report. Part 1 : the Wash NRA monitoring review |
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| 820 | Water quality 2000 : a strategy for the water quality function |
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| 821 | The Cam catchment, Anglian region : proposals for statutory water quality objectives |
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| 822 | Computer files used in the calculation of Rutland and Grafham yields |
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| 823 | The control of effluent discharges by a direct toxicity assessment (DTA) approach |
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| 824 | The Restoration of Floodplain Woodlands in Lowland Britain |
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| 825 | Take to the water : a beginner's guide to boating on inland waterways |
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