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4676Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report
4677Supplementary survey of contaminated land : report
4678Satellite based lone worker alarm systems : update
4679Take to the water : a beginner's guide to boating on inland waterways
4680Measures for protecting upland water quality (forestry) : progress report for 1991/92
4681Guidelines on statutory returns : Bathing Waters Directive
4682Thames Region : EC dangerous substances directive : STW data 1991-1992
4683A Methodology To Derive Groundwater Clean-Up Standards. Volume 2: Background Information
4684The role of the National Rivers Authority in droughts
4685Material safety data sheet
4686Regional water quality monitoring and surveillance programme for 1992 : biological impact assessment of discharges on receiving waters
4687River Glen : river channel assessment : annex C : an assessment of low flow characteristics of the River Glen, Lincolnshire
4688River quality : 1993
4689Fishery survey of the River Axe catchment
4690Metal contamination of sediments an statutory quality objectives R and D (331/8/N)
4691Effects on gammarus of sediments impacted by watercress farms
4692Evaluation of the effectiveness of the Water Fringe Option Scheme on Environmental Quality
4693Monitoring of rivers and effluents
4694Environmental Protection Act 1990 Best Practical Environmental Option and Other Assessment Methods: Case Study Comparisons
4695The River Conwy catchment management plan : action plan (bilingual) : 1995: Cynllun Gweithrediad Cynllun Rheoli Dalgylch yr Afon Conwy 1995
4696Impact assessment of Meldon quarry on water quality in the West Okement river
4697River Strat catchment river water quality classification 1991
4698Report on the quality of bathing waters 1990
4699Isle of Wight catchment management plan : consultation report
4700Spring Carp Mortality Syndrome (SCMS) Transmission Study