| 76 | Alternative Methods For The Biological Classification Of Rivers |
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| 77 | A Review of Methods for Assessing the Hydromorphology of Lakes |
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| 78 | The Identification of Oestrogenic Effects in Wild Fish - Phase II |
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| 79 | Cyanobacteria (blue-green algae) in the south west region 1989 |
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| 80 | Investigations of discharges into the River Lemon at Newton Abbot |
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| 81 | Report on monitoring of environmental quality in the Severn Estuary |
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| 82 | Water quality in Anglian Region : the first five years |
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| 83 | Investigation to determine the cause of the long-term BOD failure at Higher Weaver routine monitoring site (70532960) for 1995 and 1997 |
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| 84 | Monitoring of the Priory storm overflow on the River Tone at Taunton : June - November 1991 and water quality investigations unit January 1992 |
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| 85 | Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus |
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| 86 | 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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| 87 | A study of the use of Glycol-based de-icers at RAF Lyneham and their impact on local watercourses during the winter of 1999/2000 |
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| 88 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
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| 89 | Interim guidelines on the ranges of enteric organism decay rates (T90s) under different marine conditions |
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| 90 | Trevone Bay beach EC bathing water guideline non-compliance : investigation into the Trevone Stream : final report |
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| 91 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |
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| 92 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 93 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
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| 94 | The National Centre for Environmental Data and Surveillance : annual report April 1998 - April 1999 |
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| 95 | A Proposed Scheme To Ensure The Quality Of Data Generated By Laboratories Undertaking Regulatory Ecotoxicological Testing |
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| 96 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
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| 97 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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| 98 | Microbiological examination of coastal waters in the North West : summary of results 1998 |
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| 99 | Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report |
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| 100 | Investigation into the intermittent failure of Wembury Beach to comply with EC bathing water |
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