251 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
252 | Quality audit of biological samples for the 1991 river quality survey |
253 | Pesticides in the aquatic environment 1997 full report |
254 | The precious resource : a brief guide to managing our water resources |
255 | Quantification of the relationship between effluent quality and biological quality : final report |
256 | Priority and other specific polluting substances and the Water Framework Directive |
257 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
258 | Problems with sea trout and salmon in the Western Highlands |
259 | The Cam catchment : recommendations for statutory water quality objectives |
260 | The National Centre for Toxic and Persistent Substances |
261 | Algal blooms in the Lower Tees- Perspectives and prospects
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262 | The Warwickshire Avon catchment management plan : final plan : October 1994 |
263 | Water from the River Dee : a working partnership |
264 | River quality in England and Wales : a report of the 1990 survey |
265 | Snapshots of the environment : understanding coastal water quality |
266 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
267 | The Mersey estuary : a report on environmental quality |
268 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
269 | Catches of migratory fish in the River Don, Aberdeenshire |
270 | Stream survey and assessment in the Ashford and Folkestone areas |
271 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
272 | The 1990 river and estuary classification survey of England and Wales |
273 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
274 | Model For Investigating The Impacts Of Groundwater Abstraction |
275 | Operational mechanisms for the protection and enhancement of headwaters |