| 26 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2002 : The Environment Agency (CEH Report Ref: C00158/31) |
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| 27 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
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| 28 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
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| 29 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
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| 30 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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| 31 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 32 | Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority |
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| 33 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
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| 34 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 35 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
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| 36 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 37 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 38 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
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| 39 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : AQC audit : C00158/11 |
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| 40 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : primary audit : C00158/10 |
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| 41 | 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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| 42 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
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| 43 | Creating an environmental vision : 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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| 44 | 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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| 45 | 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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| 46 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 158/23 |
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