| 501 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
|---|
| 502 | An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley |
|---|
| 503 | River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man |
|---|
| 504 | Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation |
|---|
| 505 | Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA |
|---|
| 506 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
|---|
| 507 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
|---|
| 508 | An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06 |
|---|
| 509 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
|---|
| 510 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
|---|
| 511 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
|---|
| 512 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
|---|
| 513 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
|---|
| 514 | PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps |
|---|
| 515 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
|---|
| 516 | The River Eden Demonstration Test Catchment (DTC) Data |
|---|
| 517 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
|---|
| 518 | Environmental snapshot for the East of England [version 1] |
|---|
| 519 | The regulation of salmon angling in Great Britain
|
|---|
| 520 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
|---|
| 521 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
|---|
| 522 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
|
|---|
| 523 | Dead zones, live markers: the biological environments of larger U.K. Rivers
|
|---|
| 524 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
|---|
| 525 | The evaluation of Grant/YSU 3800 water quality monitor |
|---|
