| 26 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
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| 27 | The biology of the sea trout. Summary of a symposium held at Plas Menai 24-26 October 1984 |
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| 28 | The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study |
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| 29 | An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys |
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| 30 | Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph |
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| 31 | Operational mechanisms for the protection and enhancement of headwaters |
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| 32 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 33 | Alternative Methods For The Biological Classification Of Rivers |
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| 34 | The drought of 1988-1992 in Anglia : a review |
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| 35 | The 1990 river and estuary classification survey of England and Wales |
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| 36 | Audit report on the 1995 GQA biological survey |
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| 37 | The quality of rivers in England and Wales (1990 to 1995) |
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| 38 | Method for the assessment of river water quality using benthic macroinvertebrates |
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| 39 | Quantification of the relationship between effluent quality and biological quality : final report |
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| 40 | Guidance on the use of Bioassays in Ecological Risk Assessment |
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| 41 | An Aerial Photograph of Ferry House and The Pearsall Building |
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| 42 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
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| 43 | Biological water quality monitoring in the Midlands region |
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| 44 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 45 | The River Colne Estuary subtidal biological survey 1992 |
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| 46 | Eel and elver studies in the Severn : interim report (256/6/ST) |
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| 47 | Metallothionein in eels from the Thames Estuary : an indicator of environmental quality |
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| 48 | Medway Estuary fisheries survey 2000 : (incorporating the report for 1997 to 2000) |
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| 49 | An ecological study of the effects of ferric dosing on the plankton and benthic invertebrates of Grafham Water between May 1990 and November 1991 |
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| 50 | Results of the oyster (Crassostrea gigas) embryo-larval biassay on samples taken during the winter phase of national maritime monitoring programme 1997 : interim report |
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