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426An investigation of sewage on the beach at Porthcothan
427Charging for discharges scheme : guidance to the engineering industry
428The Test catchment southern : recommendations for statutory water quality objectives
429The Worcestershire Stour catchment : recommendations for statutory water quality objectives
430An assessment of river water quality in the River Kenn
431A survey of ferruginous minewater impacts in the Welsh coalfields
432A survey of ferruginous minewater impacts in the Welsh coalfields
433Dioxins and the River Doe Lea : plain English report
434Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report
435Locks and weirs on the river Thames : how do they work?
436The quality of rivers and estuaries in Northumbria region 1990
437A guide to sustainable urban drainage : protecting the quality of our environment
438Estuarial migration of Atlantic salmon in the river Dee (North Wales)
439Doe Lea restoration study : the work of WRc
440The NRA in business : annual review and summary accounts 1993-94
441Cyanobacteria (blue-green algae) in the south west region 1989
442Toxic blue-green algae : a report by the National Rivers Authority
443Investigation of salinity in the river Thurne catchment of North East Norfolk
444Catchment abstraction management strategies (CAMS) and the Water Framework Directive (WFD)
445Managing water abstraction : the catchment abstraction management strategy process : April 2001
446Water quality investigations in the Newlyn river catchment
447An assessment of water quality in the River Yarty catchment
448Investigations of discharges into the River Lemon at Newton Abbot
449Report on monitoring of environmental quality in the Severn Estuary
450Artificial recharge to groundwater in the Otter valley