| 476 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |
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| 477 | Catchment management plans : protecting and enhancing the water environment in an integrated manner |
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| 478 | The Impact Of Grazing And Upland Management On Erosion And Runoff: Additional Information |
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| 479 | The Somerset Levels and Moors : water level management and nature conservation : consultation paper |
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| 480 | Land use practices and pathways of pesticide residues in the Mount's Bay catchment, Cornwall |
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| 481 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 482 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 483 | Pesticides 2000 : a summary of monitoring of the aquatic environment in England and Wales |
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| 484 | National marine baseline survey 1995 : littoral cell 4 : the Thames to Selsey Bill |
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| 485 | Less sensitive areas and candidate high natural dispersion areas in the North West region |
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| 486 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
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| 487 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk F |
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| 488 | Extending Rutland yield analysis to 1933 : supporting documentation for the regional water resources strategy |
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| 489 | Criteria for WFD Groundwater Good 'Quantitative Status' and a framework for the assessment of groundwater abstractions |
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| 490 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 491 | Aldrin and dieldrin concentrations in the Newlyn catchment during 1991 an interim report |
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| 492 | Analysis of bacteriological contamination and accumulation of metals and organics in the mussel (Mytilus edulis) |
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| 493 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 494 | Notice to water only companies of programme of environmental obligations agreed by the Secretary of State for the Environment, Transport and the Regions and for Wales : periodic review of water company price limits 2000-2005 |
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| 495 | A review of the hydrogeological information for the Thompson and Merton areas, Norfolk : including predictions of the impact of nearby chalk water abstractions on water levels at Thompson Water, Carr and Common SSSI and candidate SAC |
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| 496 | Analysis of natural and polluted river communities in Great Britain- Progress report for the period April 1984- March 1988
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| 497 | Report on two electrofishing surveys carried out between July 10-25 1978 and July 9-12 1979 on the proposed Kielder Water
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| 498 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk F in 2013 |
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| 499 | An investigation into possible causes of poor water quality at Blakewell Bridge (R30A001) on the Bradiford Water |
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| 500 | Analysis of growth and survival of sea trout from the Welsh Dee: Interim Report, 2nd April 2000 |
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