| 526 | Future water resources in the Thames Region : a strategy for sustainable management : summary document |
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| 527 | Future water resources in the Thames Region : a strategy for sustainable management. June 1994 |
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| 528 | Groundwater management in the North West: efficiency review and business plan: certificate in management |
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| 529 | Environmental impact assessment in relation to water resources authorisations : guidance on the requirements and procedures |
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| 530 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 531 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
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| 532 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : AQC audit |
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| 533 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : primary audit |
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| 534 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk B |
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| 535 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 536 | Saving water : the NRA's approach to water conservation and demand management : a consultation report |
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| 537 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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| 538 | Policy and practice for the protection of groundwater : North West region : 2nd edition, 1995 |
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| 539 | The Somerset Levels and Moors : water level management and nature conservation : consultation paper |
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| 540 | Annual review of the Colne, Upper Lee, North London and Roding, Beam and Ingerbourne catchments |
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| 541 | An investigation into the water quality of a treated effluent from Hambleton Dairy, Todber, Dorset |
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| 542 | Economic evaluation of inland fisheries: The economic impact of freshwater angling in England and Wales |
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| 543 | Old Bedford incorporating the Middle Level and Ouse Washes : consultation report - May 1997 |
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| 544 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 545 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 546 | Nutrient export modelling on the River Bure, Norfolk : progress report 2 : June-July 1995 |
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| 547 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 548 | Development of the Acid Water Indicator Community (AWIC) Macroinvertebrate Family and Species Level |
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| 549 | Linking hydrology and ecology : River Wissey : Annex B aquatic macrophytes of the River Wissey |
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| 550 | The available resource methodology : a framework for assessing water resources and abstraction availability : final report |
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