| 451 | An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96 |
|---|
| 452 | An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95] |
|---|
| 453 | An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge |
|---|
| 454 | Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example |
|---|
| 455 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |
|---|
| 456 | A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock |
|---|
| 457 | Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare |
|---|
| 458 | Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134) |
|---|
| 459 | A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake |
|---|
| 460 | Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment |
|---|
| 461 | Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system |
|---|
| 462 | Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank |
|---|
| 463 | The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions |
|---|
| 464 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31) |
|---|
| 465 | Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph |
|---|
| 466 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
|---|
| 467 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
|---|
| 468 | An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley |
|---|
| 469 | River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man |
|---|
| 470 | Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation |
|---|
| 471 | An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991) |
|---|
| 472 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
|---|
| 473 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
|---|
| 474 | An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06 |
|---|
| 475 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
|---|
