| 26 | Benefit Assessment of Water Quality Improvements - Additional Information |
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| 27 | Northumbria region 1992/93 corporate plan |
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| 28 | River Derwent catchment management plan : consultation report |
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| 29 | River flow and rainfall statistics updated to 31st December 1992 |
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| 30 | Yorkshire Derwent catchment flood management plan, March 2007 |
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| 31 | 1996 Hit Lists, Final Draft, PARCOM High Loads summarised by Region |
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| 32 | Daily nitrous oxide (N2O) flux measurements: OPTI-N, East Yorkshire, 2005 |
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| 33 | Advisory report on nutrient levels and related ecology of Malham Tarn
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| 34 | 1996 Hit Lists, Final Draft, PARCOM Low Loads summarised by Region |
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| 35 | Yorkshire Region Plan Summary 1991/1992 |
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| 36 | The Aire catchment (river factfiles) |
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| 37 | Guarding Yorkshire's water environment |
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| 38 | Greatham Creek tidal defences inter regional review : prepared for the purposes of legal proceedings |
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| 39 | Local Environment Agency plan Esk and coast (Hartlepool to Filey Bay) : consultation report, November 1997 |
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| 40 | National Rivers Authority river quality survey GQA assessment 1993 Nothumbria and Yorkshire Region. Part 1 Reach classification : Freshwater rivers and canals |
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| 41 | Aire LEAP draft environmental overview : September 1998 |
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| 42 | Catchment drainage studies and flood plain identification : Lumley Park Burn and Herrington Burn : section 105 - C30/92 surveys |
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| 43 | Water resources for the future : a summary of the strategy for North East Region |
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| 44 | Your guide to who's who : Ridings Area |
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| 45 | The faunal richness of headwater streams. Stage 3 : impact of agricultural activities. Volume 2 : appendices (Note 392) |
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| 46 | Economics of water resource management : draft final report. September 1992. Vol 2 : Technical report |
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| 47 | Hull and East Riding local environment agency plan : August 1998 |
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| 48 | The river Aire conservation within the catchment : a summary of survey methods and information held on the wildlife of the river Aire catchment |
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| 49 | The Tyne catchment (river factfiles) |
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| 50 | The Calder catchment (river factfiles) |
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