| 1501 | An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991) |
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| 1502 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |
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| 1503 | Environmental Quality Standards for Dissolved Oxygen |
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| 1504 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
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| 1505 | Determining The Causes Of 'Apparent Eutrophication' Effects |
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| 1506 | Phosphorus in the Thames catchment |
|---|
| 1507 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
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| 1508 | River Medway : a user's guide |
|---|
| 1509 | Sea Empress Cost-Benefit Project: Final Report |
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| 1510 | Classification of river water quality : version 1.0, 29 April 1992 |
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| 1511 | Development of Environmental Standards (Water Resources) Stage 2: Typology Rewiew |
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| 1512 | Bedford Ouse (lower reaches) LEAP : first annual review : May 2001 |
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| 1513 | Impact Of Conifer Harvesting And Replanting On Upland Water Quality |
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| 1514 | Porth, Gluvian and Menalhyl catchment river water quality classification 1990 |
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| 1515 | River Cober catchment river water quality classification 1991 |
|---|
| 1516 | River Fal catchment river water quality classification 1990 |
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| 1517 | River Fal catchment river water quality classification 1991 |
|---|
| 1518 | River Par and Crinnis catchment river water quality classification 1990 |
|---|
| 1519 | River Par and Crinnis catchment river water quality classification 1991 |
|---|
| 1520 | St Austell River and south Cornwall coastal streams catchment river water quality classification 1990 |
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| 1521 | Cryptosporidium in drinking water : survey of occurrence. June 1991 |
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| 1522 | River Cober catchment river water quality classification 1990 |
|---|
| 1523 | Developing Quality Assurance for Fish Counter Data - Phase 1: An Assessment of the Salmonid Fish Counter Network in England and Wales |
|---|
| 1524 | Quality assurance for phytoplankton data |
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| 1525 | Quality in Corporate Planning 1993 |
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