526 | River Valency and Crackington Streams catchment river water quality classification 1990 |
527 | River Axe abstraction : implications for water quality |
528 | Annual classification of river water quality 1991 |
529 | Summary report on environmental developments : volume 1 : legislation and European practice : October 1988 |
530 | Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive |
531 | Environmental planning issues in the North Wessex area |
532 | River quality objectives |
533 | River Seaton catchment river water quality classification 1991 |
534 | North West Norfolk catchment management plan : consultation report : March 1995 |
535 | Investigation of the effects of sewage treatment works discharges on receiving waters in the Lowermoor Water Treatment Works supply area November 1989 |
536 | Strategy for the use of field instrumentation in water quality monitoring |
537 | Freshwater Tamar and tributaries catchment management plan : action plan |
538 | Exe freshwater model : quasar model design |
539 | Macroinvertebrates of the River Nar : Great Ouse catchment : draft report |
540 | River Wissey investigations : linking hydrology and ecology March 1994 |
541 | Regional water quality monitoring and surveillance programme for 1992 : quality investigations in controlled waters |
542 | Upper Nene catchment management plan : consultation report summary |
543 | River Glen : river channel assessment : main report |
544 | Dorset Stour : first annual review : January 1998 - December 1998 |
545 | Performances of sewage treatment works discharging to an estuary : a marine environment or sensitive area : draft final report |
546 | NRA baseline estuary and coastal waters monitoring programme |
547 | Upper Bristol Avon catchment management : consultation report |
548 | Technical Summary - Appraisal of the Impact of Multiple Retailers Quality Assurance Schemes on the Environment |
549 | River Lynher catchment river water quality classification 1990 |
550 | 'Sea Vigil' water quality monitoring : Lincolnshire coast report 1994 |