401 | The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales |
402 | The new waterlands? Proceedings of a one day seminar organised by the Sussex Wildlife Trust as part of the RSNC Wildlife Trusts Parnership Water For Wildlife campaign |
403 | The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington |
404 | Audit 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 |
405 | Measures to safeguard public water supplies : a second report to the Secretary of State for the Environment on the drought of 1995 |
406 | Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team |
407 | The 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 |
408 | Report on the results of a comparison of data from two surveys of the microfauna of the wash carried out in 1991 and 1993 |
409 | Factual report on the boreholes and installation of standpipes for the combined investigations in connection with the East Ruston common SSSI Alleviation Scheme |
410 | A 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 |
411 | Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme |
412 | A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive |
413 | Assessment 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 |
414 | 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 |
415 | 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 |
416 | 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 |
417 | Recorded data from the Black Bridge weather station (weather station 2) in the Wensum Catchment between 2010-2011 |
418 | The behaviour of adult salmon (Salmo salar L.) in the River Tay as determined by radio telemetry |
419 | Darwell Transfer Scheme. Final Report Part II. Location of the draw-off tower in the Darwell Reservoir |
420 | Recorded data from the Black Bridge weather station (weather station 2) in the Wensum Catchment between 2013-2014 |
421 | Recorded data from the Black Bridge weather station (weather station 2) in the Wensum Catchment between 2011-2012 |
422 | Recorded data from the Swan Hills weather station (weather station 1) in the Wensum Catchment between 2012-2013 |
423 | Recorded data from the Black Bridge weather station (weather station 2) in the Wensum Catchment between 2012-2013 |
424 | Radioactivity in the environment : a summary and radiological assessment of the Environment Agency's monitoring programmes : report for 1996 |
425 | The biology of the sea trout. Summary of a symposium held at Plas Menai 24-26 October 1984 |