| 476 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk C |
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| 477 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
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| 478 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk E |
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| 479 | National marine baseline survey 1995 : littoral cell 7 : Lands End to the Severn Estuary |
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| 480 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk F |
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| 481 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
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| 482 | National marine baseline survey 1995 : littoral cell 4 : the Thames to Selsey Bill |
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| 483 | Distribution of Macroinvertebrates in English and Welsh Rivers based on the 1995 Survey |
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| 484 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
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| 485 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk F |
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| 486 | Criteria for WFD Groundwater Good 'Quantitative Status' and a framework for the assessment of groundwater abstractions |
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| 487 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
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| 488 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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| 489 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk M |
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| 490 | Devon area internal report - further investigations into pipe discharges in the Lower Teign estuary |
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| 491 | Alleviation of low flow studies : the River Avon and its tributaries near Malmesbury : towards a solution |
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| 492 | A report on water quality issues within the Midford Brook catchment - June 1996 |
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| 493 | National marine baseline survey 1995 : littoral cell 11 : Great Orme to the Solway Firth |
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| 494 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 495 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 496 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
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| 497 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 498 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
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| 499 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report summary : November 1994 |
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| 500 | The distribution of PCDDS and PCDFS in surface freshwater systems 2nd Interim Progress Report - February 1993 |
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