| 401 | Tywi catchment management plan : consultation report June 1994 |
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| 402 | Tywi catchment management plan consultation report summary : June 1994 |
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| 403 | Upper Wye catchment management : consultation report summary : June 1993 |
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| 404 | Usk catchment management plan : consultation report |
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| 405 | Usk catchment management plan : consultation report summary : April 1995 |
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| 406 | Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document |
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| 407 | National Rivers Authority summary annual report and accounts, 1991/92 |
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| 408 | Bathing waters report 1991 |
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| 409 | Policy and practice for the protection of groundwater |
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| 410 | UK national monitoring plan : regional report for England and Wales : estuarine and intermediate sites (1991 to 1995) |
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| 411 | Combined sewer overflow remedial strategy : South West Area report |
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| 412 | Distribution of PCDDS an PCDFS in surface freshwater systems draft final report R and D Project 330 |
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| 413 | Economic evaluation of inland fisheries: The economic impact of freshwater angling in England and Wales |
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| 414 | Surface water yield assessment (Phase II) (414/2/N) : interim report |
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| 415 | Rhymney catchment management plan : consultation report : January 1996 |
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| 416 | The Menai Strait catchment management plan : action plan (bilingual) : Cynllun Rheoli Dalgylch Afon Menai; 1995 Cynllun Gweithredu |
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| 417 | The Menai Strait Catchment Managment Plan Action Plan; 1995 (Bilingual) |
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| 418 | The River Ogmore catchment management plan : action plan |
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| 419 | The River Taf catchment management plan : action plan 1995 (bilingual) : Cynllun rheoli dalgylch Afon Taf : cynllun gweithredu 1995 |
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| 420 | The Tawe and South Gower catchment management plan : action plan 1995 (bilingual) |
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| 421 | Usk catchment management plan : action plan 1996 |
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| 422 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 423 | Duties and powers of the Environment Agency |
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| 424 | Hydropower developments and the National Rivers Authority |
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| 425 | NRA policy implementation guidance notes (PIGN) |
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