| 51 | The Ribble Estuary 1992 surveys : summary of results |
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| 52 | Cyanobacteria (blue-green algae) in the south west region 1989 |
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| 53 | Quality audit of biological samples for the 1991 river quality survey |
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| 54 | The quality of rivers in England and Wales (1990 to 1995) |
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| 55 | Investigations of discharges into the River Lemon at Newton Abbot |
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| 56 | The National Centre for Environmental Data and Surveillance : business plan 1999/2000 |
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| 57 | Pesticides in the aquatic environment 1997 full report |
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| 58 | The fuel additive MTBE - a groundwater protection issue? |
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| 59 | Charging for discharges scheme : guidance to the agricultural industry |
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| 60 | Policy and practice for the protection of groundwater : Thames Region appendix |
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| 61 | Guidance on the use of Bioassays in Ecological Risk Assessment |
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| 62 | Macroinvertebrates in the Kennet catchment : Part 1 - water quality monitoring |
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| 63 | Biological water quality monitoring in the Midlands region |
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| 64 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 65 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 66 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
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| 67 | Report on monitoring of environmental quality in the Severn Estuary |
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| 68 | The National Centre for Toxic and Persistent Substances |
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| 69 | The Identification of Oestrogenic Effects in Wild Fish - Phase II |
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| 70 | A review of the optimum accuracy of flow and rainfall forecasting |
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| 71 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 72 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 73 | A report on the River Chew at Chewton Mendip, 6th August 1992 |
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| 74 | The Mersey Estuary 1992 surveys : summary of results |
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| 75 | Development of an Estuarine Classification Scheme for the Water Framework Directive |
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