426 | Results of the NRA Welsh regional marine bioaccumulation programme 1991-1995 : SE/EAU/95/9 |
427 | The use of herbicides to control weeds in or near water |
428 | General awareness, environment management and the Water Framework Directive (WFD) |
429 | Further Validation of PHABSIM for the Habitat Requirements of Salmonid Fish |
430 | A second stage evaluation of the Grant YSI3815 Water Logger |
431 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
432 | An investigation of sewage on the beach at Porthcothan |
433 | Charging for discharges scheme : guidance to the engineering industry |
434 | The Test catchment southern : recommendations for statutory water quality objectives |
435 | The Worcestershire Stour catchment : recommendations for statutory water quality objectives |
436 | An assessment of river water quality in the River Kenn |
437 | A survey of ferruginous minewater impacts in the Welsh coalfields |
438 | A survey of ferruginous minewater impacts in the Welsh coalfields |
439 | Dioxins and the River Doe Lea : plain English report |
440 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
441 | Locks and weirs on the river Thames : how do they work? |
442 | The quality of rivers and estuaries in Northumbria region 1990 |
443 | A guide to sustainable urban drainage : protecting the quality of our environment |
444 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
445 | Doe Lea restoration study : the work of WRc |
446 | The NRA in business : annual review and summary accounts 1993-94 |
447 | Cyanobacteria (blue-green algae) in the south west region 1989 |
448 | Toxic blue-green algae : a report by the National Rivers Authority |
449 | Investigation of salinity in the river Thurne catchment of North East Norfolk |
450 | Catchment abstraction management strategies (CAMS) and the Water Framework Directive (WFD) |