| 51 | The Environment Agency's state of the environment report for Thames Region |
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| 52 | River Darent : strategy for the enhancement of the River Darent, Kent |
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| 53 | The effects of Guildford STW on the River Wey |
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| 54 | Preventing the spread of crayfish plague in the South West |
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| 55 | The extent of phosphorus release in the Norfolk Broads |
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| 56 | Report on the 1995 stock assessment of the Douglas catchment |
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| 57 | Investigation into the cause of high pH in the Budleigh Brook |
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| 58 | The results of fish telemetry trails in the river Tawe estuary, 1991 |
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| 59 | Hysim model : modelling the flows of the River Deben |
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| 60 | An investigation into the effect of Farnham STW on the River Wey |
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| 61 | An investigation into the effects of Woking STW on the River Wey |
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| 62 | The restoration of the River Ver : the success story of a collaborative project between the National Rivers Authority, Three Valleys Water and the Ver Valley Society |
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| 63 | Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000) |
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| 64 | The release of ammonium and phosphorus from the sediments of the River Ant and Barton Broad : interim report |
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| 65 | Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River |
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| 66 | Investigations into the extent of saline water ingress into the River Parrett and the River Tone : February, March 1994 |
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| 67 | A desk study to assess the compliance of the River Fowey with the EC Surface Water Abstraction Directive : June 1997 COR/97/024 |
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| 68 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
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| 69 | The impact of ferruginous minewater break-outs on the environmental quality of the Rivers Rhymney, Ebbw and Sirhowy : summary report |
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| 70 | The control of phosphorus in the catchment of the rivers Ant and Bure : interim report for period January - December 1992 |
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| 71 | Rivers of the Isle of Wight |
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| 72 | The River Lark project Model Manual |
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| 73 | Flood defences : the Lower Witham strategy |
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| 74 | Pollution control on the River Alt |
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| 75 | 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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