626 | Water from the River Dee : a working partnership |
627 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
628 | River quality in England and Wales : a report of the 1990 survey |
629 | Snapshots of the environment : understanding coastal water quality |
630 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
631 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
632 | Rivers of the Isle of Wight fact file |
633 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
634 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
635 | The Mersey estuary : a report on environmental quality |
636 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
637 | Catches of migratory fish in the River Don, Aberdeenshire |
638 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
639 | The 1990 river and estuary classification survey of England and Wales |
640 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
641 | An Independent Review of the Defra/EA Research and Development Joint |
642 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
643 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
644 | General guide to the prevention of water pollution |
645 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
646 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
647 | Life cycle assessment of disposable and reusable nappies in the UK |
648 | Managing the social aspects of flooding: Synthesis Report |
649 | National guidelines for the production of NRA regions 1990/91 regional plans |
650 | Policy and practice for the protection of groundwater : regional appendix Welsh region |