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476The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington
477Audit surveys in the NRA Thames region : a report on the surveys carried out in 1992/93 to assess the retention and enhancement of wildlife habitats during routine dredging operations
478Measures to safeguard public water supplies : a second report to the Secretary of State for the Environment on the drought of 1995
479Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team
480The Movements of Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Lower River and Estuary of the River Conwy, North Wales
481A study of the mayfly parasite Spiriopsis adipophila, Arvy and Peters (1972) (=Sprininella adipophila, Arvy and Delage 1966) in Ephemera danica from the River Pang, a tributary of the River Thames
482Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme
483A review of available information sources for assessing the hazards and risks of chemical substances in the environment. Final report : recommendations for the acquistion of certain sources of environmental data
484Warming to the idea : meeting the challenge of climate change in the South West : summary report : south west region climate change impacts scoping study
485A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive
486Assessment of Ivybridge mobile monitoring station and investigation of the water quality of the River Erme and the effect of Ivybridge Sewage Treatment works final effluent
487Investigations 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
488Meiofaunal 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
489Survey of the biological quality of creek systems in the outer Thames Estuary, with special reference to the impact of STW and landfill site discharges
490The behaviour of adult salmon (Salmo salar L.) in the River Tay as determined by radio telemetry
491Darwell Transfer Scheme. Final Report Part II. Location of the draw-off tower in the Darwell Reservoir
492Radioactivity in the environment : a summary and radiological assessment of the Environment Agency's monitoring programmes : report for 1996
493The biology of the sea trout. Summary of a symposium held at Plas Menai 24-26 October 1984
494Time of travel for the Greadon Farm pollution incident on the Upper Torridge of 19th August 1997 (1997)
495A strategy for the management of the new South East Area Biology Team across a dual location following restructuring
496An estimated map of NO2 concentration in the Midlands region : a report produced for the Environment Agency
497The environmental impact of sewage discharges to the Salcombe Estuary, South Devon, from Anchor Watch, Cliff Raod, Salcombe
498Water conservation planning in the USA : meeting organised by the Environment Agency and CIWEM, 14th June 1996, CBI
499The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study
500Pesticides in the aquatic environment : regional data appendix : prepared by the National Centre for Toxic and Persistent Substances (TAPS)