426 | Charging for discharges scheme : guidance to the engineering industry |
427 | The Test catchment southern : recommendations for statutory water quality objectives |
428 | An assessment of river water quality in the River Kenn |
429 | A survey of ferruginous minewater impacts in the Welsh coalfields |
430 | A survey of ferruginous minewater impacts in the Welsh coalfields |
431 | Dioxins and the River Doe Lea : plain English report |
432 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
433 | Locks and weirs on the river Thames : how do they work? |
434 | The quality of rivers and estuaries in Northumbria region 1990 |
435 | A guide to sustainable urban drainage : protecting the quality of our environment |
436 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
437 | Doe Lea restoration study : the work of WRc |
438 | The NRA in business : annual review and summary accounts 1993-94 |
439 | Cyanobacteria (blue-green algae) in the south west region 1989 |
440 | Toxic blue-green algae : a report by the National Rivers Authority |
441 | Investigation of salinity in the river Thurne catchment of North East Norfolk |
442 | Catchment abstraction management strategies (CAMS) and the Water Framework Directive (WFD) |
443 | Managing water abstraction : the catchment abstraction management strategy process : April 2001 |
444 | Water quality investigations in the Newlyn river catchment |
445 | An assessment of water quality in the River Yarty catchment |
446 | Investigations of discharges into the River Lemon at Newton Abbot |
447 | Artificial recharge to groundwater in the Otter valley |
448 | The Ely Ouse catchment management plan : final plan : January 1994 |
449 | Water quality in Anglian Region : the first five years |
450 | The environmental requirements of adult Atlantic salmon (Salmo salar L.) during their upstream migration in the Northwest Miramichi River, New Brunswick. Draft. |