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4651Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report
4652Supplementary survey of contaminated land : report
4653Satellite based lone worker alarm systems : update
4654Take to the water : a beginner's guide to boating on inland waterways
4655Measures for protecting upland water quality (forestry) : progress report for 1991/92
4656Guidelines on statutory returns : Bathing Waters Directive
4657Thames Region : EC dangerous substances directive : STW data 1991-1992
4658A Methodology To Derive Groundwater Clean-Up Standards. Volume 2: Background Information
4659The role of the National Rivers Authority in droughts
4660Material safety data sheet
4661Regional water quality monitoring and surveillance programme for 1992 : biological impact assessment of discharges on receiving waters
4662River Glen : river channel assessment : annex C : an assessment of low flow characteristics of the River Glen, Lincolnshire
4663River quality : 1993
4664Fishery survey of the River Axe catchment
4665Metal contamination of sediments an statutory quality objectives R and D (331/8/N)
4666Effects on gammarus of sediments impacted by watercress farms
4667Synoptic State of the Environment Monitoring
4668Northern sea wall (Reculver) improvement works : environmental statement : non-technical summary
4669Evaluation of the effectiveness of the Water Fringe Option Scheme on Environmental Quality
4670Monitoring of rivers and effluents
4671Environmental Protection Act 1990 Best Practical Environmental Option and Other Assessment Methods: Case Study Comparisons
4672The River Conwy catchment management plan : action plan (bilingual) : 1995: Cynllun Gweithrediad Cynllun Rheoli Dalgylch yr Afon Conwy 1995
4673Impact assessment of Meldon quarry on water quality in the West Okement river
4674River Strat catchment river water quality classification 1991
4675Report on the quality of bathing waters 1990