501 | The Mersey estuary : a report on environmental quality |
502 | Stream survey and assessment in the Ashford and Folkestone areas |
503 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
504 | The 1990 river and estuary classification survey of England and Wales |
505 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
506 | An Independent Review of the Defra/EA Research and Development Joint |
507 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
508 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
509 | General guide to the prevention of water pollution |
510 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
511 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
512 | Life cycle assessment of disposable and reusable nappies in the UK |
513 | Managing the social aspects of flooding: Synthesis Report |
514 | Operational mechanisms for the protection and enhancement of headwaters |
515 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
516 | Procurement legislation and the NRA : a brief guide |
517 | Survey of copper speciation in the Great Ouse estuary |
518 | Sustainable development indicators : monitoring change in the East Midlands |
519 | Technical Support Materials for the Regulation of Radioactively Contaminated Land |
520 | The impact of climate change on severe droughts: Implications for decision making |
521 | The Potential For Generating Hydro-Electricity From Weirs |
522 | The Potential For Aquifer Storage And Recovery In England And Wales |
523 | Water resources for the future : a strategy for Midlands Region |
524 | Water resources for the future : a strategy for Southern region |
525 | The feasibility of biomanipulation in reservoirs and deeper lakes : draft final report |