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