626 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
627 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
628 | The Mersey estuary : a report on environmental quality |
629 | Catches of migratory fish in the River Don, Aberdeenshire |
630 | Stream survey and assessment in the Ashford and Folkestone areas |
631 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
632 | The 1990 river and estuary classification survey of England and Wales |
633 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
634 | An Independent Review of the Defra/EA Research and Development Joint |
635 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
636 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
637 | General guide to the prevention of water pollution |
638 | Guidance for the Development of Housing on Land Affected by Contamination |
639 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
640 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
641 | Life cycle assessment of disposable and reusable nappies in the UK |
642 | Managing the social aspects of flooding: Synthesis Report |
643 | Model For Investigating The Impacts Of Groundwater Abstraction |
644 | National guidelines for the production of NRA regions 1990/91 regional plans |
645 | Operational mechanisms for the protection and enhancement of headwaters |
646 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
647 | Procurement legislation and the NRA : a brief guide |
648 | Strategic review of development and flood risk : the River Welland catchment |
649 | Strategic review of development and flood risk : the River Witham catchment |
650 | Survey of copper speciation in the Great Ouse estuary |