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426The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates
427The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales
428The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington
429Audit 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
430Measures to safeguard public water supplies : a second report to the Secretary of State for the Environment on the drought of 1995
431Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team
432The 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
433A 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
434Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme
435A 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
436A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive
437Investigations 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
438Meiofaunal 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
439Survey of the biological quality of creek systems in the outer Thames Estuary, with special reference to the impact of STW and landfill site discharges
440The behaviour of adult salmon (Salmo salar L.) in the River Tay as determined by radio telemetry
441Darwell Transfer Scheme. Final Report Part II. Location of the draw-off tower in the Darwell Reservoir
442Radioactivity in the environment : a summary and radiological assessment of the Environment Agency's monitoring programmes : report for 1996
443The biology of the sea trout. Summary of a symposium held at Plas Menai 24-26 October 1984
444Time of travel for the Greadon Farm pollution incident on the Upper Torridge of 19th August 1997 (1997)
445A strategy for the management of the new South East Area Biology Team across a dual location following restructuring
446An estimated map of NO2 concentration in the Midlands region : a report produced for the Environment Agency
447The environmental impact of sewage discharges to the Salcombe Estuary, South Devon, from Anchor Watch, Cliff Raod, Salcombe
448Water conservation planning in the USA : meeting organised by the Environment Agency and CIWEM, 14th June 1996, CBI
449The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study
450Pesticides in the aquatic environment : regional data appendix : prepared by the National Centre for Toxic and Persistent Substances (TAPS)