| 476 | Water from the River Dee : a working partnership |
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| 477 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
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| 478 | Snapshots of the environment : understanding coastal water quality |
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| 479 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
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| 480 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
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| 481 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
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| 482 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
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| 483 | The Mersey estuary : a report on environmental quality |
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| 484 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
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| 485 | Catches of migratory fish in the River Don, Aberdeenshire |
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| 486 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 487 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
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| 488 | The 1990 river and estuary classification survey of England and Wales |
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| 489 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
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| 490 | An Independent Review of the Defra/EA Research and Development Joint |
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| 491 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
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| 492 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
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| 493 | General guide to the prevention of water pollution |
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| 494 | Guidance for the Development of Housing on Land Affected by Contamination |
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| 495 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
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| 496 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
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| 497 | Life cycle assessment of disposable and reusable nappies in the UK |
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| 498 | Managing the social aspects of flooding: Synthesis Report |
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| 499 | Model For Investigating The Impacts Of Groundwater Abstraction |
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| 500 | National guidelines for the production of NRA regions 1990/91 regional plans |
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