| 51 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |
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| 52 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
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| 53 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
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| 54 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
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| 55 | The Adur and Ouse catchment abstraction management strategy : consultation document |
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| 56 | Environmental assessment of selected abandoned minewaters in the North East region |
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| 57 | Water quality investigations in the Newlyn river catchment |
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| 58 | Instream Flow Requirements of the River Wissey, Norfolk, Annex C - April 1993
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| 59 | An investigation of sewage on the beach at Porthcothan |
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| 60 | Conservation and development of the River Eden spring salmon population |
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| 61 | State of the environment report for Thames Region : first update 2001 |
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| 62 | The River Avon and its tributaries near Malmesbury : river management studies |
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| 63 | Environmental planning issues in the North Wessex area |
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| 64 | Continuous water quality monitoring results for the Carnon river |
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| 65 | Dioxins and the River Doe Lea : plain English report |
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| 66 | Valuing the Humber's environmental assets : proceedings of a seminar 15 November 2000 |
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| 67 | An investigation into the bathing water quality at Porthallow |
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| 68 | The quality of rivers and estuaries in Northumbria region 1990 |
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| 69 | Pesticide residues in fish taken from the Newlyn River (1992) |
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| 70 | Identification of water quality problems in the Strat and Neet catchments |
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| 71 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
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| 72 | The River Thame : catchment review : first draft - 16th Februrary 1996 |
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| 73 | Fishery survey of the Bridgwater and Taunton Canal |
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| 74 | Groundwater flooding in the Thames region : winter 2000/01 |
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| 75 | Macroinvertebrates in the Kennet catchment : Part 1 - water quality monitoring |
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