| 551 | Project management and the scheme of delegation : a summary guide : April 1995 |
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| 552 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 553 | The Use of Immuno Based Techniques for Chemical Analysis |
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| 554 | Snapshots of the environment : integrated river basin management |
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| 555 | Water from the River Dee : a working partnership |
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| 556 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
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| 557 | River quality in England and Wales : a report of the 1990 survey |
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| 558 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
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| 559 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
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| 560 | Rivers of the Isle of Wight fact file |
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| 561 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
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| 562 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
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| 563 | The Mersey estuary : a report on environmental quality |
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| 564 | Catches of migratory fish in the River Don, Aberdeenshire |
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| 565 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 566 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
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| 567 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
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| 568 | An Independent Review of the Defra/EA Research and Development Joint |
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| 569 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
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| 570 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
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| 571 | General guide to the prevention of water pollution |
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| 572 | Guidance for the Development of Housing on Land Affected by Contamination |
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| 573 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
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| 574 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
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| 575 | Life cycle assessment of disposable and reusable nappies in the UK |
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