| 476 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 477 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
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| 478 | The 1990 river and estuary classification survey of England and Wales |
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| 479 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
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| 480 | An Independent Review of the Defra/EA Research and Development Joint |
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| 481 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
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| 482 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
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| 483 | General guide to the prevention of water pollution |
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| 484 | Guidance for the Development of Housing on Land Affected by Contamination |
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| 485 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
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| 486 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
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| 487 | Life cycle assessment of disposable and reusable nappies in the UK |
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| 488 | Managing the social aspects of flooding: Synthesis Report |
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| 489 | National guidelines for the production of NRA regions 1990/91 regional plans |
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| 490 | Operational mechanisms for the protection and enhancement of headwaters |
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| 491 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
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| 492 | Procurement legislation and the NRA : a brief guide |
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| 493 | Survey of copper speciation in the Great Ouse estuary |
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| 494 | Technical Support Materials for the Regulation of Radioactively Contaminated Land |
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| 495 | The impact of climate change on severe droughts: Implications for decision making |
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| 496 | The Impact of Grazing and Upland Management on Erosion and Runoff |
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| 497 | The Potential For Generating Hydro-Electricity From Weirs |
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| 498 | The Potential For Aquifer Storage And Recovery In England And Wales |
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| 499 | The feasibility of biomanipulation in reservoirs and deeper lakes : draft final report |
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| 500 | The development and verification of methodologies for defining groundwater nitrate vulnerable zones |
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