| 501 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk M |
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| 502 | YSI, turbidity and discharge data for the Wensum Demonstration Test Catchment's monitoring kiosk M in 2013 |
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| 503 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2014 |
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| 504 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2013 |
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| 505 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk B |
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| 506 | Effects of suspended solids on salmon (Salmo salar, L.) in the Parrett stuary, Somerset, Draft |
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| 507 | Guidance on the Development of Typology and Classification Systems for Transitional and Coastal Waters |
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| 508 | Technical basis for the predicted impacts of relocating Redgrave abstraction to Borehole B |
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| 509 | River Wissey investigations : linking hydrology and ecology : summary of a recommendations for the River Wissey (OI/526) |
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| 510 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |
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| 511 | Review of Lake Benthic Macro-invertebrate Sampling Methods and Strategy for the Water Framework Directive |
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| 512 | The Environment Agency water efficiency awards 2003 : inspirational case studies demonstrating good practice across all sectors |
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| 513 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk C |
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| 514 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
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| 515 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk E |
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| 516 | National marine baseline survey 1995 : littoral cell 7 : Lands End to the Severn Estuary |
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| 517 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk F |
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| 518 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
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| 519 | National marine baseline survey 1995 : littoral cell 4 : the Thames to Selsey Bill |
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| 520 | Distribution of Macroinvertebrates in English and Welsh Rivers based on the 1995 Survey |
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| 521 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
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| 522 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk F |
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| 523 | Criteria for WFD Groundwater Good 'Quantitative Status' and a framework for the assessment of groundwater abstractions |
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| 524 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 525 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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