| 901 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : AQC audit |
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| 902 | An audit of performance in the analysis of biological samples in 1998. Environment Agency : primary audit |
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| 903 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : AQC audit |
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| 904 | An audit of performance in the analysis of biological samples in 1999. Environment Agency : primary audit |
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| 905 | National sea defence survey phase IVA : volume 8 : topographic drawings of the River Swale |
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| 906 | Appraisal of nature conservation and recreation improvement measures at the Environment Agency's estates |
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| 907 | Digital groundwater vulnerability maps : 1 : 100,000 series. Policy and practice for the protection of groundwater |
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| 908 | Further investigation of the pilot borehole at Bean's Lane, Wortham (94/7/912) : September 1994 |
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| 909 | Saving water : the NRA's approach to water conservation and demand management : a consultation report |
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| 910 | Review of environmental audits prepared by county councils in the North East area |
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| 911 | The Somerset Levels and Moors : water level management and nature conservation : consultation paper |
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| 912 | The Status of Headwater Stream Fish Populations and their Tolerance to Low-Level Habitat Degradation |
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| 913 | Economic evaluation of inland fisheries: The economic impact of freshwater angling in England and Wales |
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| 914 | The Environment Agency's risk portfolio : version 1.0 preliminary draft for comment December 1999 |
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| 915 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
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| 916 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 917 | Scenarios for the operational implementation of remote sensing of snow by satellites : interim report (207/3/N) |
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| 918 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 919 | Development of the Acid Water Indicator Community (AWIC) Macroinvertebrate Family and Species Level |
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| 920 | The application and validation of in situ ecotoxicological assays at biologically and chemically incongruous sites (379/2/T) |
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| 921 | A report on a baseline survey of the subtidal benthic communities within Portland Harbour (January 1997) |
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| 922 | Policy and practice for the protection of groundwater : regional appendix South West region |
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| 923 | The available resource methodology : a framework for assessing water resources and abstraction availability : final report |
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| 924 | Controlling the inputs of persistent chemical to marine waters from land-based sources |
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| 925 | The Impact Of Discarded Fishing Line And Tackle On Mute Swans - Phase 1 |
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