| 401 | Alleviation of low flow studies : the River Avon and its tributaries near Malmesbury : towards a solution |
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| 402 | A report on water quality issues within the Midford Brook catchment - June 1996 |
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| 403 | National marine baseline survey 1995 : littoral cell 11 : Great Orme to the Solway Firth |
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| 404 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 405 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 406 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
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| 407 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 408 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report summary : November 1994 |
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| 409 | The distribution of PCDDS and PCDFS in surface freshwater systems 2nd Interim Progress Report - February 1993 |
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| 410 | Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report |
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| 411 | R and D Strategy to Support Implementation of the Water Framework Directive - Preliminary Scoping Report |
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| 412 | The government's policy for a public regulatory body in a privatised water industry |
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| 413 | Less sensitive areas and candidate high natural dispersion areas in the North West region |
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| 414 | Two year aesthetic survey of beaches in the South West (1990 and 1991) |
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| 415 | The Influence of Variations in Flow on General Quality Assessment of Rivers - Summary Document |
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| 416 | Annual classification of river water quality 1992 : numbers of samples exceeding the quality standard |
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| 417 | The Impact Of Grazing And Upland Management On Erosion And Runoff: Additional Information |
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| 418 | Extending Rutland yield analysis to 1933 : supporting documentation for the regional water resources strategy |
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| 419 | Investigation into the intermittent failure of Wembury Beach to comply with EC bathing water |
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| 420 | The River Babingley. Volume 1 : executive summary : a report for National Rivers Authority, Anglian Region |
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| 421 | The hydrological effects of demand management : project definition stage report : 28th May 1996 |
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| 422 | Improved monitoring for surface water quality : the development of a manual of best practice |
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| 423 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk D in 2011 |
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| 424 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk B in 2011 |
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| 425 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk A |
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