| 1 | The rehabilitation of the River Taff |
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| 2 | Snapshots of the environment : conserving the land |
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| 3 | The law of the National Rivers Authority |
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| 4 | The regulation of fish farming by the National Rivers Authority |
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| 5 | The effect of the voluntary initiative on water quality |
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| 6 | A report on the investigation of the Taff litter problem |
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| 7 | The investigation of the Taff litter problem : report no. PL/EAE/89/2 |
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| 8 | Abandoned mines and the water environment : report of the National Rivers Authority |
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| 9 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
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| 10 | Duties and powers of the Environment Agency |
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| 11 | Hydropower developments and the National Rivers Authority |
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| 12 | Snapshots of the environment : enhancing biodiversity |
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| 13 | Achieving the quality : annex : programme of environmental obligations agreed by the Secretary of State for the Environment, Transport and the Regions and for Wales for individual water companies |
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| 14 | Snapshots of the environment : regulating major industry |
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| 15 | Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual) |
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| 16 | The environmental impact of the foot and mouth disease outbreak: and interim assessment |
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| 17 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 18 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 19 | Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species |
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| 20 | Further Validation of PHABSIM for the Habitat Requirements of Salmonid Fish |
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| 21 | Snapshots of the environment : a new environmental approach |
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| 22 | Proposals for statutory water quality objectives : report of the National Rivers Authority |
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| 23 | Report on monitoring of environmental quality in the Severn Estuary |
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| 24 | The NRA in business : annual review and summary accounts 1993-94 |
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| 25 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
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