| 126 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 127 | Pesticides 2000 : a summary of monitoring of the aquatic environment in England and Wales |
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| 128 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
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| 129 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 130 | Groundwater pollution : evaluation of the extent and character of groundwater pollution from point sources in England and Wales |
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| 131 | Analysis of growth and survival of sea trout from the Welsh Dee: Interim Report, 2nd April 2000 |
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| 132 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
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| 133 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
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| 134 | NRA response to using water wisely : a consultation paper published by the DoE/Welsh Office July 1992 |
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| 135 | The Menai Strait catchment management plan : action plan (bilingual) : Cynllun Rheoli Dalgylch Afon Menai; 1995 Cynllun Gweithredu |
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| 136 | Report for Welsh Region on selected flood defence schemes and the development of a standard methodology for risk assessment |
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| 137 | A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec |
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| 138 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
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| 139 | Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990 |
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| 140 | Developing Quality Assurance for Fish Counter Data - Phase 1: An Assessment of the Salmonid Fish Counter Network in England and Wales |
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| 141 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : primary audit : C00158/10 |
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| 142 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : AQC audit : C00158/11 |
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| 143 | Groundwater vulnerability of England and Wales : policy and practice for the protection of groundwater : Scale : 1 : 1 000 000 |
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| 144 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
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| 145 | The River Taf catchment management plan : action plan 1995 (bilingual) : Cynllun rheoli dalgylch Afon Taf : cynllun gweithredu 1995 |
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| 146 | List of R and D outputs September 1989 to September 1995 : the National Rivers Authority's R and D programme |
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| 147 | Algal growth in the impounded waters of a proposed barrage at Cardiff Bay : prediction using 1989 data |
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| 148 | Water resources for the future : a strategy for Wales (Bilingual) : Adnoddau dwr ar gyfer y dyfodol (Bilingual) |
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| 149 | A report of the conservation and recreation market testing project on : conservation operational advice, conservation collaborative projects, recreational collaborative projects, landscape assessment |
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| 150 | Creating an environmental vision : summary : progressing the Environment Agency's contribution to sustainable development by way of a better environment in England and Wales. Consultation draft June 2000 |
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