| 851 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 852 | Scenarios for the operational implementation of remote sensing of snow by satellites : interim report (207/3/N) |
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| 853 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 854 | Development of the Acid Water Indicator Community (AWIC) Macroinvertebrate Family and Species Level |
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| 855 | The application and validation of in situ ecotoxicological assays at biologically and chemically incongruous sites (379/2/T) |
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| 856 | A report on a baseline survey of the subtidal benthic communities within Portland Harbour (January 1997) |
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| 857 | Policy and practice for the protection of groundwater : regional appendix South West region |
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| 858 | The available resource methodology : a framework for assessing water resources and abstraction availability : final report |
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| 859 | Controlling the inputs of persistent chemical to marine waters from land-based sources |
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| 860 | The Impact Of Discarded Fishing Line And Tackle On Mute Swans - Phase 1 |
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| 861 | A review of the industrial uses of continuous monitoring systems : minerals industry processes |
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| 862 | Herbicides for use in or near the aquatic environment: Priorities for Environmental Quality Standards Development |
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| 863 | Manual for the use of herbicides in or near water : April 1993 : final draft report |
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| 864 | Direct toxicity assessment : a step towards better environmental protection within the UK : business strategy |
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| 865 | Pesticides 2000 : a summary of monitoring of the aquatic environment in England and Wales |
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| 866 | Analysis of airborne platform specifications and operations for the National Rivers Authority by Atlantique Reconnaissance Ltd |
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| 867 | Effectiveness of eutrophication control by phosphorus reduction: development of the INCA-P model |
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| 868 | The evaluation of a pHOX model 962 hand-held dissolved oxygen meter (220/28/T) |
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| 869 | The evaluation of a WTW model OXI 196 hand-held dissolved oxygen meter (220/29/T) |
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| 870 | The evaluation of a YSI model 58 hand-held dissolved oxygen meter (220/24/T) |
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| 871 | The evaluation of an ABB Kent-Taylor model 7135 hand-held dissolved oxygen meter (220/30/T) |
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| 872 | Definition of terms used in the assessment information management system (AIMS) : guidance note 5 |
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| 873 | Time of travel study on the River Wandle under two different flow conditions |
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| 874 | The Natural (Baseline) Quality of Groundwaters in England and Wales - Magnesium Limestone of Yorkshire and Northumbria |
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| 875 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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