| 451 | The River Weaver : fact file |
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| 452 | River Wissey investigations : linking hydrology and ecology : executive summary (OI/526/1/A) |
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| 453 | The distribution of nutrients and phytoplankton in the North-East Irish Sea |
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| 454 | Ferric dosing of Grafham Water : a review of its impact on benthic invertebrates 1990-1993 |
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| 455 | River Camel EC Dangerous Substance Directive failure 1993 |
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| 456 | Recreational waterways in the Anglian region : byelaws |
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| 457 | River Tamar annex 1A investigation : November 1996 COR/96/010 |
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| 458 | National marine baseline survey 1995 : littoral cell 3 : the Wash to the Thames |
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| 459 | Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996 |
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| 460 | Environmental snapshot for the East of England (summary report) |
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| 461 | River Tavy alleviation of low flow project : Tavistock/Morwellham Canal : investigation into environmental impacts of proposed flow changes |
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| 462 | Shrewsbury flood defences : the next steps |
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| 463 | River quality survey NRA Northumbria and Yorkshire region GQA assessment 1994. Part 2 sample point report |
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| 464 | River Adur : fact files 6 |
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| 465 | Strategic review of development and flood risk : Louth coastal catchments |
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| 466 | Policy and practice for the protection of groundwater - Anglian Region appendix |
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| 467 | Fisheries Recreation, conversation and navigation |
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| 468 | Conservation fact file (3/9) |
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| 469 | Managing water resources NRA |
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| 470 | North West recreation, biology and conservation annual report 2000-2001 |
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| 471 | River Welland navigation |
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| 472 | Environmental appraisal of Derwentwater low water levels : Volume 1 : hydrological and geological study |
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| 473 | Environment Agency Anglian region : Central area business plan 2001/02 |
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| 474 | Regional water quality monitoring and surveillance programme for 1992 : quality assessment of enclosed waters |
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| 475 | Time of travel of pollutants study : River Torridge : Q28/Q32 |
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