| 51 | Regional review 1989/90 |
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| 52 | Environmental protection - the waste management licensing regulations 1994 : amended and consolidated. Version 5 |
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| 53 | Flood defence : long term plans 1997/98 - 2006/07 |
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| 54 | A simplified guide to Thames region fishery byelaws and national byelaws |
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| 55 | Technical Summary - Alternative Approaches to Assessing the Aesthetic Quality of the Environment |
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| 56 | 1995 environmental report : annexes : NRA internal environmental policy |
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| 57 | The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study |
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| 58 | Pesticides in the aquatic environment : regional data appendix : prepared by the National Centre for Toxic and Persistent Substances (TAPS) |
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| 59 | Thames estuary benthic programme : Thames estuary sediment contaminant levels 2nd quarter (Apr-Jun) |
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| 60 | Data on the effects of Parathion in the freshwater environment |
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| 61 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 62 | Endocrine Function in Aquatic Invertebrates and Evidence for Disruption by Environmental Pollutants |
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| 63 | Guidance on the Development of Typology and Classification Systems for Transitional and Coastal Waters |
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| 64 | Conservation, biology and recreation annual report 1998-99 : North West |
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| 65 | Cleaner air for everyone : a framework for change : July 2001 |
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| 66 | Conservation : annual report 1991/92 |
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| 67 | Conservation access recreation annual report 1994-95 |
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| 68 | An ecological study of the effects of ferric dosing on the plankton and benthic invertebrates of Grafham Water between May 1990 and November 1991 |
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| 69 | Green Household Index - The Eco-Cal |
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| 70 | Guidelines on statutory returns : Dangerous Substances Directive : List 1 substances |
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| 71 | Library and Information Services short term implementation project : project completion report 25 March 1996 |
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| 72 | National Rivers Authority annual report and accounts 1995/96 |
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| 73 | National Rivers Authority corporate plan, 1995/96 : looking ahead to a better environment |
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| 74 | NRA corporate plan 1991/92 Summary |
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| 75 | NRA corporate plan 1993/94 : catchment management planning 5 year programme and timetable |
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