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151A report on the River Chew at Chewton Mendip, 6th August 1992
152Guide to the use of control charts in water analysis
153Development of an Estuarine Classification Scheme for the Water Framework Directive
154River quality in England and Wales : a report of the 1990 survey
155Snapshots of the environment : understanding coastal water quality
156River water quality in the Midlands 1994/95 : water quality summary data
157Metallothionein in eels from the Thames Estuary : an indicator of environmental quality
158Strategy for the use of field instrumentation in water quality monitoring
159The Influence of Variations in Flow on General Quality Assessment of Rivers
160An assessment of the NRA algal growth inhibition test : 1993/4
161The Mersey estuary : a report on environmental quality
162'Sea Vigil' water quality monitoring : the East coast 1992-1993
163Stream survey and assessment in the Ashford and Folkestone areas
164Toxic blue-green algae : a report by the National Rivers Authority
165Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8
166The 1990 river and estuary classification survey of England and Wales
167Summary of monitoring activities on the blackwater estuary
168Water quality in Anglian Region : the first five years
169The evaluation of an orion ammonium ion selective electrode (220/15/T)
170Investigation of mercury contamination in the Red River catchment, West Cornwall
171The quality of rivers and estuaries in Northumbria region 1990
172The Ribble Estuary 1992 surveys : summary of results
173Anthropogenic Impacts on the Hydrology of Rivers and Lochs
174Operational mechanisms for the protection and enhancement of headwaters
175The Mersey Estuary 1992 surveys : summary of results