| 51 | Swords water quality study - phase 1 : modelling the water quality of the River Thames |
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| 52 | National marine baseline survey 1995 : littoral cell 3 : the Wash to the Thames |
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| 53 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
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| 54 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 55 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 56 | 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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| 57 | 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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| 58 | 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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| 59 | 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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| 60 | 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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| 61 | (3) The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
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| 62 | Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season |
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| 63 | Guidance notes for local planning authorities on the methods of protecting the water environment through development plans |
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| 64 | The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads |
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| 65 | Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994 |
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| 66 | Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996 |
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| 67 | An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys |
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| 68 | A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock |
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| 69 | Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment |
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| 70 | Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system |
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| 71 | 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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| 72 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
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| 73 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
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| 74 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
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| 75 | The River Eden Demonstration Test Catchment (DTC) Data |
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