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451Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
452A brief history of the River Stour navigation : 1705 to the present day
453The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
454Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
455Protecting your future : tackling flooding in the Thames Estuary through the 21st century
456The land-use planning system and the Water Framework Directive (can't read barcode)
457The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
458Report for Anglian Water, NRA Unit on the uses of the Orwell and the Stour Estuaries and the use of the mathematical model to derive long term consent limits for all inputs to Orwell Estuary
459A review of the use of multifunction wardens in the Devon Area of the South Western Region of the National Rivers Authority, with particular reference to their use within the fisheries function
460Responses to 'Outlook for the environment' : a summary of the responses to the Environment Agency's consulation on the priorities for investment by water companies in environmental improvements as part of the Periodic Review
461Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
462A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
463Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
464Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
465Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
466East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
467Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
468Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
469A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
470The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
4711995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments
472Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
473The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates
474The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales
475The effects of water resources management on the rivers Bure, Wensum and Nar in North Norfolk : Final project report to the National Rivers Authority. July 1994