| 626 | River quality in England and Wales : a report of the 1990 survey |
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| 627 | Snapshots of the environment : understanding coastal water quality |
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| 628 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
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| 629 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
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| 630 | Rivers of the Isle of Wight fact file |
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| 631 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
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| 632 | The Mersey estuary : a report on environmental quality |
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| 633 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
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| 634 | Catches of migratory fish in the River Don, Aberdeenshire |
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| 635 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 636 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
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| 637 | The 1990 river and estuary classification survey of England and Wales |
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| 638 | An Independent Review of the Defra/EA Research and Development Joint |
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| 639 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
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| 640 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
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| 641 | General guide to the prevention of water pollution |
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| 642 | Guidance for the Development of Housing on Land Affected by Contamination |
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| 643 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
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| 644 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
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| 645 | Life cycle assessment of disposable and reusable nappies in the UK |
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| 646 | Managing the social aspects of flooding: Synthesis Report |
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| 647 | Model For Investigating The Impacts Of Groundwater Abstraction |
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| 648 | National guidelines for the production of NRA regions 1990/91 regional plans |
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| 649 | Operational mechanisms for the protection and enhancement of headwaters |
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| 650 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
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