251 | Lake restoration : the role of biomanipulation : a one day seminar held in the Broads 18th March 1993 : organised by the National Rivers Authority and the Broads Authority |
252 | Shrewsbury flood defences : the next steps |
253 | The Restoration of Vegetation on Saltmarshes |
254 | Lake Mutanda in the Kigezi District |
255 | A user's guide to the River Thames |
256 | The River Ogmore action plan support document |
257 | About the North West region : factfile |
258 | On duty round the clock : fact file |
259 | The National Rivers Authority : fact file |
260 | Evaluation of the Close Season in Canals |
261 | Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual) |
262 | Factors affecting the dispersal of coarse fish |
263 | Sustainability examples from the USA and Canada |
264 | Site supervision of the Beach Nourishment Scheme |
265 | Changes to the water abstraction licensing system |
266 | The Tame catchment (NRA Severn-Trent 67) |
267 | Fishery survey of the Doniford Stream 1994 |
268 | Fishery survey of the Horner Water catchment |
269 | Fishery survey of the River Yeo catchment |
270 | Fishery survey of the Congresbury Yeo, 1994 |
271 | Fishery survey of the River Isle catchment |
272 | Determining The Freshwater Flow Needs Of Estuaries |
273 | The Trophic Diatom Index: A User's Manual; |
274 | River water quality in the Midlands 1997 |
275 | River water quality in the Midlands 1998 |