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201River water quality in the Midlands 1994/95 : water quality summary data
202Metallothionein in eels from the Thames Estuary : an indicator of environmental quality
203Strategy for the use of field instrumentation in water quality monitoring
204The Influence of Variations in Flow on General Quality Assessment of Rivers
205An assessment of the NRA algal growth inhibition test : 1993/4
206The Mersey estuary : a report on environmental quality
207'Sea Vigil' water quality monitoring : the East coast 1992-1993
208Cyanobacteria (blue-green algae) in the south west region 1989
209Stream survey and assessment in the Ashford and Folkestone areas
210Method for the assessment of river water quality using benthic macroinvertebrates
211'Sea Vigil' water quality monitoring : the Wash 1992-1993
212Toxic blue-green algae : a report by the National Rivers Authority
213An investigation of sewage on the beach at Porthcothan
214Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8
215The Wandle, Beverley Brook, Hogsmill catchment management plan : action plan : July 1995
216The 1990 river and estuary classification survey of England and Wales
217Summary of monitoring activities on the blackwater estuary
218Water quality in Anglian Region : the first five years
219The evaluation of an orion ammonium ion selective electrode (220/15/T)
220Investigation of mercury contamination in the Red River catchment, West Cornwall
221An investigation to determine the water quality of Churchstanton Stream
222The quality of rivers and estuaries in Northumbria region 1990
223The Ribble Estuary 1992 surveys : summary of results
224Anthropogenic Impacts on the Hydrology of Rivers and Lochs
225Operational mechanisms for the protection and enhancement of headwaters