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26Investigations into the status of fisheries, biological and water quality in the River Pelenna catchment, prior to the treatment of discharges from abandoned coal mines : PL/EAW/95/3
27Survey of the biological quality of creek systems in the outer Thames Estuary, with special reference to the impact of STW and landfill site discharges
28The biology of the sea trout. Summary of a symposium held at Plas Menai 24-26 October 1984
29The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study
30An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
31A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
32Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
33Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
34Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
35NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group
36Quality audit of biological samples for the 1991 river quality survey
37Quantification of the relationship between effluent quality and biological quality : final report
38An Aerial Photograph of Ferry House and The Pearsall Building
39Stratification in the Severn Estuary- Physical aspects and biological consequences
40Stream survey and assessment in the Ashford and Folkestone areas
41The 1990 river and estuary classification survey of England and Wales
42Operational mechanisms for the protection and enhancement of headwaters
43Identification of water quality problems in the Strat and Neet catchments
44Method for the assessment of river water quality using benthic macroinvertebrates
45Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
46Guidance on the use of Bioassays in Ecological Risk Assessment
47Biological water quality monitoring in the Midlands region
48Bacteriological monitoring of freshwater rivers in the Thames Region 1995
49Environmental assessment of selected abandoned minewaters in the North East region
50Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality