451 | A macroinvertebrate survey of the Releath stream and associated tributaries within the vicinity of Trevethan Farm : final draft report - Water Quality section, Cornwall area |
452 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2002 : The Environment Agency (CEH Report Ref: C00158/31) |
453 | The Management of blue-green algal blooms in South-East Australia : a report on the visit to Australia by MJ Pearson and AJD Ferguson in January/February 1993 |
454 | Impact of watercress cultivation on river water quality- Progress report for the period January- December 1987 |
455 | National marine baseline survey 1995 : littoral cell 2 : Flamborough Head to the Wash |
456 | Best Available Techniques For The Control Of Pollution In Inorganic Chemical Processes - Appendix |
457 | Thames Environment 21. The Environment Agency strategy for land-use planning in Thames Region |
458 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
459 | Interim guidelines on the ranges of enteric organism decay rates (T90s) under different marine conditions |
460 | Trevone Bay beach EC bathing water guideline non-compliance : investigation into the Trevone Stream : final report |
461 | Water pollution incidents in England and Wales 1994 : report of the National Rivers Authority |
462 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk D |
463 | Hope Cove : non-compliance in 1998 with the European Community bathing water directive (76/160/EEC) |
464 | Manual for the use of herbicides in or near water : January 1993 : final draft report |
465 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk A |
466 | The development of a portable battery-powered telemetry system for use in water quality investigations |
467 | River Meavy salmon and sea trout populations : assessment of the impact of flows |
468 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk C |
469 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk D |
470 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk M |
471 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk B |
472 | Guidance on the Development of Typology and Classification Systems for Transitional and Coastal Waters |
473 | Technical basis for the predicted impacts of relocating Redgrave abstraction to Borehole B |
474 | River Wissey investigations : linking hydrology and ecology : summary of a recommendations for the River Wissey (OI/526) |
475 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |