| 26 | The River Tywi catchment management plan : action plan (bilingual) |
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| 27 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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| 28 | The Tawe and South Gower catchment management plan : action plan 1995 (bilingual) |
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| 29 | Results of the NRA Welsh regional marine bioaccumulation programme 1991-1995 : SE/EAU/95/9 |
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| 30 | Doses from the consumption of Cardiff Bay flounder containing organically-bound tritium |
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| 31 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
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| 32 | Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8 |
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| 33 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 34 | Use of rod catch-effort data to monitor migratory salmonids in Wales : a report submitted in part fulfillment of the requirements of the course |
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| 35 | A review of factors affecting the abundance and catch of spring salmon fom the River Wye and elsewhere, and proposals for stock maintenance and enhancement |
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| 36 | The results of Tawe barrage post-impoundment salmon and sea trout telemetry study 1992 |
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| 37 | Biological characteristics and exploitation of sea trout in the River Tywi during 1989 |
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| 38 | Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales |
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| 39 | Guardians of the water environment : NRA Welsh Region (bilingual) : Diogelwyr amgyllchedd dwr : rhanbarth Cymru |
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| 40 | Analysis of growth and survival of sea trout from the Welsh Dee: Interim Report, 2nd April 2000 |
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| 41 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
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| 42 | Algal growth in the impounded waters of a proposed barrage at Cardiff Bay : prediction using 1989 data |
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| 43 | Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990 |
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| 44 | Water resources for the future : a strategy for Wales (Bilingual) : Adnoddau dwr ar gyfer y dyfodol (Bilingual) |
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| 45 | Report for Welsh Region on selected flood defence schemes and the development of a standard methodology for risk assessment |
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| 46 | The faunal richness of headwater streams. Stage 3 : impact of agricultural activities. Volume 2 : appendices (Note 392) |
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| 47 | The Menai Strait catchment management plan : action plan (bilingual) : Cynllun Rheoli Dalgylch Afon Menai; 1995 Cynllun Gweithredu |
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| 48 | The River Taf catchment management plan : action plan 1995 (bilingual) : Cynllun rheoli dalgylch Afon Taf : cynllun gweithredu 1995 |
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