| 51 | Best Available Techniques For The Control Of Pollution In The Fine And Speciality Organic Chemical Sector |
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| 52 | The ecology and management of riparian trees in the NRA Anglian region : draft final report |
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| 53 | Ecological effects of discharges from watercress farms on the chalk-streams of the NRA Wessex Region |
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| 54 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 55 | Planning for the rising tides : the Humber estuary shoreline management plan. Summary of proposals |
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| 56 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 57 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 58 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 59 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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| 60 | Survey of the biological quality of creek systems in the outer Thames Estuary, with special reference to the impact of STW and landfill site discharges |
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| 61 | Evaluation of peroxygens for the amelioration of river pollution : on behalf of the Environment Agency, Thames Region |
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| 62 | An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley |
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| 63 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
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| 64 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
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| 65 | Environmental snapshot for the East of England [version 1] |
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| 66 | Acidification of freshwaters: the threat and its mitigation |
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| 67 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 68 | Water from the River Dee : a working partnership |
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| 69 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
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| 70 | Flood warning information for the Hertfordshire/Essex border : River Stort catchment |
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| 71 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
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| 72 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
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| 73 | NRA strategy for reducing the concentration of pesticides in controlled waters |
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| 74 | Fine sediment deposition in the River Keer : geomorphological assessment |
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| 75 | The flood of February 1990 : technical services flood monitoring report |
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