| 6551 | Flood defence (NRA Severn-Trent 59)
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| 6552 | Scoping guidance for the environmental assessment of projects |
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| 6553 | A study of the mayfly parasite Spiriopsis adipophila, Arvy and Peters (1972) (=Sprininella adipophila, Arvy and Delage 1966) in Ephemera danica from the River Pang, a tributary of the River Thames |
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| 6554 | Macrophyte status of the Rivers Test and Itchen - Hampshire : summary report - October 1998 |
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| 6555 | Oxford structures fisheries survey 1992 |
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| 6556 | Riparian and instream species-habitat relationships (291/3/W) |
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| 6557 | River Lark : biological monitoring 1989-91, RE Isleham WTW |
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| 6558 | The physical character of rivers and streams in the UK and Isle of Man |
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| 6559 | Serratella ignita |
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| 6560 | A monitoring methodology for wetlands |
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| 6561 | A wetland framework for impact assessment at statutory sites in England and Wales |
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| 6562 | River catchment management plans : marsh dykes ecology survey : appraisal report |
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| 6563 | River Severn upper reaches catchment management plan : second annual review : July 1996 - July 1997 |
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| 6564 | The drought of 1988-1992 in Anglia : a review |
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| 6565 | An assessment of water quality an Nansmellyn Marsh |
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| 6566 | Life in rivers |
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| 6567 | An Analytical And Descriptive Model Of Sustainable Development |
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| 6568 | Biogeochemical Controls on Phosphorus Cycling Between Sediment and Water in Estuaries |
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| 6569 | Definition of the Extent and Vertical Range of Saltmarsh |
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| 6570 | Sea Trout Investigations Phase 1 Final Report |
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| 6571 | Development of an Estuarine Classification Scheme for the Water Framework Directive |
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| 6572 | Development of Hydromorphical Reference Conditions and Draft Classification Scheme for Transitional and coastal Waters -Work packages 1-4 |
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| 6573 | Disposal of Cut Vegetation: Best Practice Guidelines |
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| 6574 | Fish Pass Design for Eel and Elver |
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| 6575 | LEAPS : Local Environment Agency Plans |
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