26 | The NRA in business : annual review and summary accounts 1993-94 |
27 | Report on monitoring of environmental quality in the Severn Estuary |
28 | The quality of rivers in England and Wales (1990 to 1995) |
29 | 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 |
30 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2002 : The Environment Agency (CEH Report Ref: C00158/31) |
31 | Proceedings of the conference National Minewaters 20th -21st April 1998 Tapton Hall Sheffield University |
32 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
33 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
34 | Bathing water quality in England and Wales in 1994 : report of the National Rivers Authority |
35 | NRA programme for the monitoring of water quality Parts 1 to 3 - November 1994 |
36 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
37 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
38 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
39 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
40 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : primary audit : C00158/10 |
41 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
42 | Developing Quality Assurance for Fish Counter Data - Phase 1: An Assessment of the Salmonid Fish Counter Network in England and Wales |
43 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
44 | An audit of performance in the analysis of biological samples in 2000. Environment Agency : AQC audit : C00158/11 |
45 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 158/23 |
46 | 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 |
47 | 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 |
48 | 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 |