501 | Stream survey and assessment in the Ashford and Folkestone areas |
502 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
503 | The 1990 river and estuary classification survey of England and Wales |
504 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
505 | An Independent Review of the Defra/EA Research and Development Joint |
506 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
507 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
508 | General guide to the prevention of water pollution |
509 | Guidance for the Development of Housing on Land Affected by Contamination |
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 | Model For Investigating The Impacts Of Groundwater Abstraction |
515 | National guidelines for the production of NRA regions 1990/91 regional plans |
516 | Operational mechanisms for the protection and enhancement of headwaters |
517 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
518 | Procurement legislation and the NRA : a brief guide |
519 | Survey of copper speciation in the Great Ouse estuary |
520 | Technical Support Materials for the Regulation of Radioactively Contaminated Land |
521 | The impact of climate change on severe droughts: Implications for decision making |
522 | The Impact of Grazing and Upland Management on Erosion and Runoff |
523 | The Potential For Generating Hydro-Electricity From Weirs |
524 | The Potential For Aquifer Storage And Recovery In England And Wales |
525 | The feasibility of biomanipulation in reservoirs and deeper lakes : draft final report |