| 51 | Investigation into the cause of high pH in the Budleigh Brook |
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| 52 | The extent of phosphorus release in the Norfolk Broads |
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| 53 | The Environment Agency's state of the environment report for Thames Region |
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| 54 | Hysim model : modelling the flows of the River Deben |
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| 55 | 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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| 56 | The release of ammonium and phosphorus from the sediments of the River Ant and Barton Broad : interim report |
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| 57 | The control of phosphorus in the catchment of the rivers Ant and Bure : interim report for period January - December 1992 |
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| 58 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
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| 59 | Investigations into the extent of saline water ingress into the River Parrett and the River Tone : February, March 1994 |
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| 60 | 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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| 61 | 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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| 62 | Fish found in the tidal Thames |
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| 63 | The River Lark project Model Manual |
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| 64 | River water quality in the Midlands 1997 |
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| 65 | Lake restoration : the role of biomanipulation : a one day seminar held in the Broads 18th March 1993 : organised by the National Rivers Authority and the Broads Authority |
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| 66 | Stock assessment review on the River Dart |
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| 67 | Study of the River Stour, Kent |
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| 68 | Investigation to determine if the soakaway from the Stowford Farm caravan site is having an impact on the biological community of the Colam stream |
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| 69 | The River Ogmore action plan support document |
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| 70 | The Tame catchment (NRA Severn-Trent 67) |
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| 71 | Stock assessment review on the River Teign |
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| 72 | Fishery survey of the River Isle catchment |
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| 73 | 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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| 74 | The River Lark project Final Report |
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| 75 | Fishery survey of the Doniford Stream 1994 |
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