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401The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
402The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
403The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
404A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
405A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
406The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
407An investigation into the effects of Alton sewage works on the River Wey North
408Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
409A brief history of the River Stour navigation : 1705 to the present day
410The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
411Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
412Protecting your future : tackling flooding in the Thames Estuary through the 21st century
413The land-use planning system and the Water Framework Directive (can't read barcode)
414The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
415Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
416Report 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
417Responses 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
418Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
419A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
420Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
421Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
422Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
423East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
424Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
425Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme