| 826 | A report on a baseline survey of the subtidal benthic communities within Portland Harbour (January 1997) |
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| 827 | Policy and practice for the protection of groundwater : regional appendix South West region |
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| 828 | The available resource methodology : a framework for assessing water resources and abstraction availability : final report |
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| 829 | Controlling the inputs of persistent chemical to marine waters from land-based sources |
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| 830 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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| 831 | A review of the industrial uses of continuous monitoring systems : minerals industry processes |
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| 832 | Herbicides for use in or near the aquatic environment: Priorities for Environmental Quality Standards Development |
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| 833 | Manual for the use of herbicides in or near water : April 1993 : final draft report |
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| 834 | Direct toxicity assessment : a step towards better environmental protection within the UK : business strategy |
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| 835 | Pesticides 2000 : a summary of monitoring of the aquatic environment in England and Wales |
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| 836 | Analysis of airborne platform specifications and operations for the National Rivers Authority by Atlantique Reconnaissance Ltd |
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| 837 | Devon area internal report - measurement of dissolved oxygen levels in the Dart estuary - March 1996 |
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| 838 | The evaluation of a pHOX model 962 hand-held dissolved oxygen meter (220/28/T) |
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| 839 | The evaluation of a WTW model OXI 196 hand-held dissolved oxygen meter (220/29/T) |
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| 840 | The evaluation of a YSI model 58 hand-held dissolved oxygen meter (220/24/T) |
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| 841 | The evaluation of an ABB Kent-Taylor model 7135 hand-held dissolved oxygen meter (220/30/T) |
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| 842 | An evaluation of discharge and consent compliance policy : a blueprint for the future |
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| 843 | An evaluation of discharge and consent compliance policy : a blueprint for the future : letters from respondents |
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| 844 | Definition of terms used in the assessment information management system (AIMS) : guidance note 5 |
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| 845 | The Natural (Baseline) Quality of Groundwaters in England and Wales - Magnesium Limestone of Yorkshire and Northumbria |
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| 846 | Analysis of bacteriological contamination and accumulation of metals and organics in the mussel (Mytilus edulis) |
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| 847 | Desktop study of methods for the monitoring of particulate emissions from positively pressurised baghouses |
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| 848 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
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| 849 | Scope for growth and levels of contaminants in mussels from the Wash. Phase 2 |
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| 850 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk B in 2012 |
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