51 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 1998-March 1999 |
52 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2001 |
53 | A report on the 1993 strategic stock assessment survey of the Eamont catchment with particular reference to salmonid fish |
54 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
55 | Investigation into the 1999 failure of the European Community bathing waters directive at Teignmouth Town Beach (2001) |
56 | An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment |
57 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft |
58 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
59 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
60 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
61 | An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment |
62 | Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment |
63 | Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph |
64 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
65 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
66 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
67 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
68 | The 1990 river and estuary classification survey of England and Wales |
69 | Operational mechanisms for the protection and enhancement of headwaters |
70 | The development and verification of methodologies for defining groundwater nitrate vulnerable zones |
71 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
72 | Identification of water quality problems in the Strat and Neet catchments |
73 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
74 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
75 | The National Rivers Authority employee attitude survey : summary |