526 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
527 | River quality in England and Wales : a report of the 1990 survey |
528 | Snapshots of the environment : understanding coastal water quality |
529 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
530 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
531 | Rivers of the Isle of Wight fact file |
532 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
533 | The Mersey estuary : a report on environmental quality |
534 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
535 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
536 | The 1990 river and estuary classification survey of England and Wales |
537 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
538 | An Independent Review of the Defra/EA Research and Development Joint |
539 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
540 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
541 | General guide to the prevention of water pollution |
542 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
543 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
544 | Life cycle assessment of disposable and reusable nappies in the UK |
545 | Managing the social aspects of flooding: Synthesis Report |
546 | National guidelines for the production of NRA regions 1990/91 regional plans |
547 | Operational mechanisms for the protection and enhancement of headwaters |
548 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
549 | Procurement legislation and the NRA : a brief guide |
550 | Strategic review of development and flood risk : the River Welland catchment |