| 901 | Final report of the Stock Assessment Task Group |
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| 902 | A report on the use of pesticides at two Hampshire watercress farms |
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| 903 | Fact sheet for the RBCA tool kit for chemical releases |
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| 904 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
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| 905 | An investigation of sewage on the beach at Porthcothan |
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| 906 | Assessing and controlling the ecotoxicity of complex effluents |
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| 907 | Charging for discharges scheme : guidance to the engineering industry |
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| 908 | Charging for discharges scheme : guidance to the power generation industry |
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| 909 | The Test catchment southern : recommendations for statutory water quality objectives |
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| 910 | The Worcestershire Stour catchment : recommendations for statutory water quality objectives |
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| 911 | An assessment of river water quality in the River Kenn |
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| 912 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 913 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 914 | Dioxins and the River Doe Lea : plain English report |
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| 915 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
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| 916 | Narrowboats on the Thames : useful hints and tips |
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| 917 | Locks and weirs on the river Thames : how do they work? |
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| 918 | Second annual review of the Lower Bristol Avon catchment management plan |
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| 919 | Second annual review of the Upper Bristol Avon catchment management plan |
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| 920 | The River Avon and its tributaries near Malmesbury : river management studies |
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| 921 | Fishery survey of the Bridgwater and Taunton Canal |
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| 922 | The quality of rivers and estuaries in Northumbria region 1990 |
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| 923 | A guide to sustainable urban drainage : protecting the quality of our environment |
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| 924 | Air dispersion climate from the Castle Cement works at Ribblesdale |
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| 925 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
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