501 | The Mersey estuary : a report on environmental quality |
502 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
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 on the use of Soil Screening Values for Ecological Risk Assessment |
510 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
511 | Life cycle assessment of disposable and reusable nappies in the UK |
512 | Managing the social aspects of flooding: Synthesis Report |
513 | National guidelines for the production of NRA regions 1990/91 regional plans |
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 | Strategic review of development and flood risk : the River Welland catchment |
518 | Strategic review of development and flood risk : the River Witham catchment |
519 | Survey of copper speciation in the Great Ouse estuary |
520 | Sustainable development indicators : monitoring change in the East Midlands |
521 | Technical Support Materials for the Regulation of Radioactively Contaminated Land |
522 | The impact of climate change on severe droughts: Implications for decision making |
523 | The Impact of Grazing and Upland Management on Erosion and Runoff |
524 | The Potential For Generating Hydro-Electricity From Weirs |
525 | The Potential For Aquifer Storage And Recovery In England And Wales |