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501Humber estuary catchment management plan : report summary : July 1994
502River Otter : environmental data review. Volume 4 : appendices : River Otter environmental study 1993/94
5031990 classification of estuary quality
504East Looe river : river ecosystem (RE) non-compliance investigation : final draft report
505River Dart catchment river water quality classification 1990
506River quality : July 1990 - June 1991
507Yare catchment management plan : consultation report summary
508River Gannel catchment river water quality classification 1991
509Determination of Metal Background Reference Concentrations: Feasibility Study
510River Irwell catchment management plan : water quality supplement
511Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority
512The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
513The River Ash : enhancement project
514UK Sewage Sludge Survey
515The management of the water resources of the Little Ouse groundwater unit
516River Yealm catchment river water quality classification 1991
517Regional water quality monitoring and surveillance programme for 1992 : quality assessment of river waters
518River water quality in the Midlands 1994/95 : water quality summary data
519St Agnes spore and dye survey 10/8/95 (draft)
520Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality
521A review of polyelectrolytes to identify priorities for EQS Development
522River Exe catchment management plan : consultation report
523River Fish Habitat Inventory Phase 3 phase III: multi-species models
524APPRAISE II: Review of Aquatic Dispersion Models
525Regional water quality monitoring and surveillance programme for 1992 : biological impact assessment of discharges on receiving waters