251 | Sustainable water resources for the future |
252 | Pollution control on the River Alt |
253 | A Review of the Application of |
254 | Ecology and the Water Framework Directive |
255 | Snapshots of the environment : regulating major industry |
256 | The introduction of an effective market testing programme for the flood defence function of the National Rivers Authority in the North West Region : certificate in management |
257 | Review of the microtox toxicity test |
258 | Silt - and its effects on the river |
259 | MCERTS : the Environment Agency's monitoring certification scheme |
260 | The effects of predation on salmon fisheries |
261 | Fisheries Assessment Software within the Environment Agency |
262 | The story of a river : Ripples 1 |
263 | Information [on the NRA Anglian Region] |
264 | The river Aire conservation within the catchment : a summary of survey methods and information held on the wildlife of the river Aire catchment |
265 | Navigations in the Anglian region (EA) |
266 | The Atlantic Salmon Trust Journal 2011 |
267 | Environmental snapshot for the Anglian region 2002 |
268 | Fish, fisheries and the Water Framework Directive |
269 | A history of the By Brook |
270 | Coastal flooding in the North West |
271 | Stock assessment review on the River Teign |
272 | Environmental issues in the Midlands 1995/96 |
273 | Stock assessment review on the River Dart |
274 | Humber estuary : state of the environment 1998 |
275 | Marine safety in the Harbour of Rye |