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76An investigation into the bathing water quality at Porthallow
77An investigation of the water quality in three Plymouth catchment streams
78The Mersey Estuary 1992 surveys : summary of results
79Development of an Estuarine Classification Scheme for the Water Framework Directive
80Macroinvertebrates in the Kennet catchment : Part 1 - water quality monitoring
81Alternative Methods For The Biological Classification Of Rivers
82A Review of Methods for Assessing the Hydromorphology of Lakes
83The Identification of Oestrogenic Effects in Wild Fish - Phase II
84Cyanobacteria (blue-green algae) in the south west region 1989
85Investigations of discharges into the River Lemon at Newton Abbot
86Report on monitoring of environmental quality in the Severn Estuary
87Water quality in Anglian Region : the first five years
88Investigation to determine the cause of the long-term BOD failure at Higher Weaver routine monitoring site (70532960) for 1995 and 1997
89Monitoring of the Priory storm overflow on the River Tone at Taunton : June - November 1991 and water quality investigations unit January 1992
90Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus
91An ecological study of the effects of ferric dosing on the plankton and benthic invertebrates of Grafham Water between May 1990 and November 1991
92A study of the use of Glycol-based de-icers at RAF Lyneham and their impact on local watercourses during the winter of 1999/2000
93Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority
94Interim guidelines on the ranges of enteric organism decay rates (T90s) under different marine conditions
95Trevone Bay beach EC bathing water guideline non-compliance : investigation into the Trevone Stream : final report
96Technical basis for the predicted impacts of relocating Redgrave abstraction to Borehole B
97Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990
98The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis
99NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994
100The National Centre for Environmental Data and Surveillance : annual report April 1998 - April 1999