401 | A second stage evaluation of the Grant YSI3815 Water Logger |
402 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
403 | An investigation of sewage on the beach at Porthcothan |
404 | Charging for discharges scheme : guidance to the engineering industry |
405 | The Test catchment southern : recommendations for statutory water quality objectives |
406 | The Worcestershire Stour catchment : recommendations for statutory water quality objectives |
407 | An assessment of river water quality in the River Kenn |
408 | A survey of ferruginous minewater impacts in the Welsh coalfields |
409 | A survey of ferruginous minewater impacts in the Welsh coalfields |
410 | Dioxins and the River Doe Lea : plain English report |
411 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
412 | Locks and weirs on the river Thames : how do they work? |
413 | The quality of rivers and estuaries in Northumbria region 1990 |
414 | A guide to sustainable urban drainage : protecting the quality of our environment |
415 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
416 | Doe Lea restoration study : the work of WRc |
417 | The NRA in business : annual review and summary accounts 1993-94 |
418 | Cyanobacteria (blue-green algae) in the south west region 1989 |
419 | Toxic blue-green algae : a report by the National Rivers Authority |
420 | Investigation of salinity in the river Thurne catchment of North East Norfolk |
421 | Water quality investigations in the Newlyn river catchment |
422 | Investigations of discharges into the River Lemon at Newton Abbot |
423 | Report on monitoring of environmental quality in the Severn Estuary |
424 | Artificial recharge to groundwater in the Otter valley |
425 | Water quality in Anglian Region : the first five years |