| 51 | A review of the performance of Aldershot STW and its effect on the River Blackwater |
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| 52 | Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary |
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| 53 | Investigation into the chemicals present and entering the Stover Lake, Stover Country Park |
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| 54 | The environmental impact of the foot and mouth disease outbreak: and interim assessment |
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| 55 | An investigation of the bacteriological quality of bathing water around the Kent coast since 1985 |
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| 56 | Using Macrophytes for the Environmental Assessment of Rivers: The Role of Sediment Nutrients |
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| 57 | The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998 |
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| 58 | Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4 |
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| 59 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 60 | Proposals to extend the Environment Agency's monitoring certification scheme (MCERTS) to the chemical testing of soils |
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| 61 | A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990 |
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| 62 | Report on the control of discharges of titanium dioxide waste to the Humber Estuary : appendices |
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| 63 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 64 | Study of the behaviour and impact of two sewage treatment works of the Thames catchment |
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| 65 | The quality of rivers, canals and estuaries in England and Wales : report of the 1990 survey |
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| 66 | The influence of agriculture on the quality of natural waters in England and Wales |
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| 67 | Report on the control of discharges of titanium dioxide waste to the Humber Estuary : main report |
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| 68 | 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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| 69 | 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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| 70 | 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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| 71 | Meiofaunal assemblages of the Thames Estuary, April 1989-March 1990 : modules I-III : a study of the meiofaunal communities present in sediment samples collected by the National Rivers Authority, Thames Region |
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| 72 | 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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| 73 | 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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| 74 | 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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| 75 | Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD |
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