| 51 | A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989 |
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| 52 | A review of the performance of Aldershot STW and its effect on the River Blackwater |
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| 53 | The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration |
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| 54 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire; |
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| 55 | The environmental impact of the foot and mouth disease outbreak: and interim assessment |
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| 56 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 57 | Investigation of the impact on water quality of the SWW Teign estuary sewerage trenching activity |
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| 58 | Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland |
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| 59 | The Possible effects on migratory fish in the River Dee of increased water abstraction |
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| 60 | Integrated appraisal of the Environment Agency's water quality policies : role of the FWR manual |
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| 61 | Clouding: the issue. An appraisal of the effects of turbidity in aquatic systems |
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| 62 | Study of the behaviour and impact of two sewage treatment works of the Thames catchment |
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| 63 | Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive |
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| 64 | Assessment of Ivybridge mobile monitoring station and investigation of the water quality of the River Erme and the effect of Ivybridge Sewage Treatment works final effluent |
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| 65 | Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority |
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| 66 | The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington |
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| 67 | Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group |
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| 68 | Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers |
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| 69 | Meiofaunal assemblages of the Thames Estuary, April 1989-March 1990 : modules I-III : a study of the meiofaunal communities present in sediment samples collected by the National Rivers Authority, Thames Region |
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| 70 | Investigations into the status of fisheries, biological and water quality in the River Pelenna catchment, prior to the treatment of discharges from abandoned coal mines : PL/EAW/95/3 |
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| 71 | Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD |
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| 72 | An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95] |
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| 73 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31) |
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| 74 | Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996 |
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| 75 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
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