| 1 | The effect of the voluntary initiative on water quality |
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| 2 | Hydrometry : the science of measuring the water cycle |
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| 3 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
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| 4 | Project record for the review and statistical analysis of the baseline coastal waters survey |
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| 5 | The quality of rivers, canals and estuaries in England and Wales : report of the 1990 survey |
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| 6 | 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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| 7 | The 1990 river and estuary classification survey of England and Wales |
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| 8 | Results of the NRA Welsh regional marine bioaccumulation programme 1991-1995 : SE/EAU/95/9 |
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| 9 | Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8 |
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| 10 | The 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 |
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| 11 | The results of Tawe barrage post-impoundment salmon and sea trout telemetry study 1992 |
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| 12 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 13 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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| 14 | Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales |
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| 15 | River corridor strategic overview feasibility study : a report to the National Rivers Authority |
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| 16 | Remote sensing and baseline monitoring of the coastal waters of England and Wales 1992-1993 : a survey report [external version] |
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| 17 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 15 8/24 |
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