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201The control of effluent discharges by a direct toxicity assessment (DTA) approach
202Identification of water quality problems in the Strat and Neet catchments
203River quality in England and Wales : a report of the 1990 survey
204Snapshots of the environment : understanding coastal water quality
205River water quality in the Midlands 1994/95 : water quality summary data
206Metallothionein in eels from the Thames Estuary : an indicator of environmental quality
207Strategy for the use of field instrumentation in water quality monitoring
208The Influence of Variations in Flow on General Quality Assessment of Rivers
209An assessment of the NRA algal growth inhibition test : 1993/4
210The Mersey estuary : a report on environmental quality
211'Sea Vigil' water quality monitoring : the East coast 1992-1993
212Cyanobacteria (blue-green algae) in the south west region 1989
213Stream survey and assessment in the Ashford and Folkestone areas
214Method for the assessment of river water quality using benthic macroinvertebrates
215'Sea Vigil' water quality monitoring : the Wash 1992-1993
216Toxic blue-green algae : a report by the National Rivers Authority
217Investigation into the cause of high phenols in Budleigh Brook (1998)
218An investigation of sewage on the beach at Porthcothan
219Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8
220The Wandle, Beverley Brook, Hogsmill catchment management plan : action plan : July 1995
221The 1990 river and estuary classification survey of England and Wales
222Summary of monitoring activities on the blackwater estuary
223Water quality in Anglian Region : the first five years
224The evaluation of an orion ammonium ion selective electrode (220/15/T)
225Investigation of mercury contamination in the Red River catchment, West Cornwall