| 251 | Eutrophication in controlled waters in the Warwickshire Avon catchment (final report). Vol 2 : appendices |
|---|
| 252 | National marine baseline survey 1995 : littoral cell 2 : Flamborough Head to the Wash |
|---|
| 253 | National marine baseline survey 1995 : littoral cell 11 : Great Orme to the Solway Firth |
|---|
| 254 | Impact assessment of scour valve test at Roadford Reservoir on water quality of the River Lyd |
|---|
| 255 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
|---|
| 256 | Annual classification of river water quality 1992 : numbers of samples exceeding the quality standard |
|---|
| 257 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
|---|
| 258 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
|---|
| 259 | Old Bedford incorporating the Middle Level and Ouse Washes : consultation report - May 1997 |
|---|
| 260 | Impact assessment of Helston Sewage Treatment Works on water quality of the River Cober Loe Pool |
|---|
| 261 | Improved monitoring for surface water quality : the development of a manual of best practice |
|---|
| 262 | Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority |
|---|
| 263 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
|---|
| 264 | Annual review of the Colne, Upper Lee, North London and Roding, Beam and Ingerbourne catchments |
|---|
| 265 | Hope Cove : non-compliance in 1998 with the European Community bathing water directive (76/160/EEC) |
|---|
| 266 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
|---|
| 267 | An assessment of mercury contamination in the Red River catchment : final draft report |
|---|
| 268 | Report on the By Brook low flow investigations : October 2001 : volume 1 : report |
|---|
| 269 | The development of a portable battery-powered telemetry system for use in water quality investigations |
|---|
| 270 | River Avon, Bath : aesthetic study of riverbanks through the urban area of Bath : final report |
|---|
| 271 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
|---|
| 272 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
|---|
| 273 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
|---|
| 274 | Effects of suspended solids on salmon (Salmo salar, L.) in the Parrett stuary, Somerset, Draft |
|---|
| 275 | Two year aesthetic survey of beaches in the South West (1990 and 1991) |
|---|
