| 6901 | Northumbria Region Plan Summary 1991/92 |
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| 6902 | Regional review and forward look : North East |
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| 6903 | Guidelines for Electric Fishing Best Practice |
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| 6904 | The quality of rivers and estuaries in Northumbria region 1990 |
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| 6905 | Bank erosion on navigable waterways R and D Report 336/1/T |
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| 6906 | Levels of service for urban and rural flood defence |
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| 6907 | A guide to sustainable urban drainage : protecting the quality of our environment |
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| 6908 | Emergency sealing of breaches : phase 1 |
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| 6909 | Emergency sealing of breaches phase II operational guidelines |
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| 6910 | Air dispersion climate from the Castle Cement works at Ribblesdale |
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| 6911 | Engineering the environment : profile of the Anglian Engineering Department |
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| 6912 | Lower Colne improvement scheme : environmental costs and benefits |
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| 6913 | Colne barrier NRA 1994 |
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| 6914 | Building a cleaner future (leaflet) |
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| 6915 | Sitewise |
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| 6916 | Agriculture and the Water Framework Directive |
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| 6917 | AMP(2) / effluent quality : NRA guidance note for preparation work for AMP(2) |
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| 6918 | Agricultural Waste Minimisation |
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| 6919 | Achieving the quality : annex : programme of environmental obligations agreed by the Secretary of State for the Environment, Transport and the Regions and for Wales for individual water companies |
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| 6920 | Process industry regulation : integrated pollution control (IPC) |
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| 6921 | Exercise Erebus |
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| 6922 | Emergency sealing of breaches. Phase 1 : interim progress report |
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| 6923 | Health and safey management systems (hsms) - introductory workbook for team leaders |
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| 6924 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
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| 6925 | Hydrodictyon, |
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