| 51 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 52 | The potential for the use of Willow in buffer zones for reducing nitrate and atrazine pollution |
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| 53 | Classification of listed substances for the purposes of the EC groundwater directive (80/68/EEC) : technical report |
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| 54 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 55 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 56 | The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990 |
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| 57 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 58 | The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document |
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| 59 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
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| 60 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 61 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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| 62 | Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species |
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| 63 | Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS) |
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| 64 | The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington |
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| 65 | Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme |
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| 66 | Investigations into the status of fisheries, biological and water quality in the River Pelenna catchment, prior to the treatment of discharges from abandoned coal mines : PL/EAW/95/3 |
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| 67 | 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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| 68 | Time of travel for the Greadon Farm pollution incident on the Upper Torridge of 19th August 1997 (1997) |
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| 69 | Review of comments on the Environment Agency's consultative report Endocrine disrupting substances in the environment - what should be done? |
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| 70 | Evaluation of peroxygens for the amelioration of river pollution : on behalf of the Environment Agency, Thames Region |
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| 71 | The use of air cooled blastfurnace slag as an unbound aggregate in the construction industry : BACMI/Environment Agency joint guidelines |
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| 72 | Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992 |
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| 73 | A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89 |
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| 74 | The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions |
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| 75 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
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