| 51 | Guidance on the assessment and interrogation of subsurface analytical contaminant fate and transport models (NC/99/38/1) |
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| 52 | The Environment Agency's risk portfolio : version 1.0 preliminary draft for comment December 1999 |
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| 53 | The River Babingley. Volume 1 : executive summary : a report for National Rivers Authority, Anglian Region |
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| 54 | A Proposed Scheme To Ensure The Quality Of Data Generated By Laboratories Undertaking Regulatory Ecotoxicological Testing |
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| 55 | A Review Of The Treatment Of Criticality In Post-Closure Safety Assessment Of Radioactive Waste Disposal |
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| 56 | The investigation of phytoplankton dynamics in coastal waters using aerial surveillance case study 3 |
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| 57 | River Glen : river channel assessment : annex E : instream habitat assessment of the River Glen, Lincolnshire |
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| 58 | National Centre for Risk Analysis and Options Appraisal guidance on economic appraisal in the Environment Agency |
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| 59 | River Glen : river channel assessment : annex C : an assessment of low flow characteristics of the River Glen, Lincolnshire |
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| 60 | River Glen : river channel assessment : annex B : an analysis of invertebrate records for the River Glen 1976-1991 |
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| 61 | Sea trout gene banks : the feasibility of developing and utilising gene banks for sea trout (salmo trutta) conservation |
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| 62 | Flood defence levels of service : stage 2 (Note 127) : summary report detailing by use of examples the component stages involved in undertaking an LOS assessment |
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| 63 | Representation of the variation of hydraulic conductivity with saturated thickness in MODFLOW. Stages 1 and 2 : code changes and testing against Birmingham University code : technical note |
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