251 | Sustainable water resources for the future |
252 | Pollution control on the River Alt |
253 | The National Rivers Authority : fact file |
254 | A Review of the Application of |
255 | Ecology and the Water Framework Directive |
256 | Changes to the water abstraction licensing system |
257 | Snapshots of the environment : regulating major industry |
258 | Review of the microtox toxicity test |
259 | Silt - and its effects on the river |
260 | MCERTS : the Environment Agency's monitoring certification scheme |
261 | Garden with care and protect the environment |
262 | A brief guide to the medway |
263 | Fishery survey of the Doniford Stream 1994 |
264 | The effects of predation on salmon fisheries |
265 | Fisheries Assessment Software within the Environment Agency |
266 | River water quality in the Midlands 1998 |
267 | The Tame catchment (NRA Severn-Trent 67) |
268 | Bewdley flood defences : the invisible defences |
269 | The story of a river : Ripples 1 |
270 | Recreation strategy for the River Thames |
271 | Information [on the NRA Anglian Region] |
272 | Recreational waterway byelaws in the Anglian region |
273 | What's happening in the North East |
274 | The River Lark project Final Report |
275 | The river Aire conservation within the catchment : a summary of survey methods and information held on the wildlife of the river Aire catchment |