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101The quality of rivers and canals in England and Wales (1990 to 1992) : as assessed by a new general quality assessment scheme : report of the National Rivers Authority
102A review of factors affecting the abundance and catch of spring salmon fom the River Wye and elsewhere, and proposals for stock maintenance and enhancement
103Implications of draft EC Directive concerning municipal waste water treatment : Memorandum submitted by the NRA to House of Lords Select Committee on the European Communities
104An evaluation of discharge and consent compliance policy : a blueprint for the future : letters from respondents
105Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000
106Economic evaluation of inland fisheries: The economic impact of freshwater angling in England and Wales
107Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University
108The results of Tawe barrage post-impoundment salmon and sea trout telemetry study 1992
109Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority
110Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority
111A review of the industrial uses of continuous monitoring systems : metals industry processes
112An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit
113Discharge consents and compliance : the NRA's approach to control of discharges to water
114Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority
115Biological characteristics and exploitation of sea trout in the River Tywi during 1989
116Demand for irrigation water (413/1/A) : progress report for the period August 1992 to January 1993
117Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority
118Desktop study of methods for the monitoring of particulate emissions from positively pressurised baghouses
119The government's policy for a public regulatory body in a privatised water industry
120Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority
121Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority
122An evaluation of discharge and consent compliance policy : a blueprint for the future
123Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority
124Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales
125Digital groundwater vulnerability maps : 1 : 100,000 series. Policy and practice for the protection of groundwater