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426The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
427Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
428Report 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
429Responses 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
430Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
431A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
432Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
433Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
434Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
435East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
436Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
437Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
438A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
439The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
4401995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments
441Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
442The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates
443The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales
444Audit 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
445Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team
446The 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
447Factual report on the boreholes and installation of standpipes for the combined investigations in connection with the East Ruston common SSSI Alleviation Scheme
448A 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
449Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme
450Warming to the idea : meeting the challenge of climate change in the South West : summary report : south west region climate change impacts scoping study