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4526Ecological effects of discharges from watercress farms on the chalk-streams of the NRA Wessex Region
4527The control of effluent discharges by a direct toxicity assessment (DTA) approach
4528Hartland Streams catchment management plan : consultation report
4529The Restoration of Floodplain Woodlands in Lowland Britain
4530Equipment for monitoring alternatives to biochemical oxygen demand and suspended solids (427/1/HO) : interim report
4531Summary of Fisheries Statistics 1993
4532Identified uses of tidal waters : volume 1
4533River Tavy catchment river water quality classification 1991
4534River Medway catchment management plan : final report
4535The quality of the Humber Estuary 1980-1990 : report of the National Rivers Authority
4536St Columb Major STW UV disinfection survey 1994 : final draft report
4537Training guidance notes : control of pollution farm waste regulations
4538Development and mapping of WFD ecological status classes to RAM river flow objectives
4539Investigate the feasibility of applying quality methods and standards within the water resources function.
4540Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report
4541Supplementary survey of contaminated land : report
4542Satellite based lone worker alarm systems : update
4543Take to the water : a beginner's guide to boating on inland waterways
4544Measures for protecting upland water quality (forestry) : progress report for 1991/92
4545Guidelines on statutory returns : Bathing Waters Directive
4546Thames Region : EC dangerous substances directive : STW data 1991-1992
4547The role of the National Rivers Authority in droughts
4548Material safety data sheet
4549Regional water quality monitoring and surveillance programme for 1992 : biological impact assessment of discharges on receiving waters
4550River quality : 1993