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426The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998
427Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report
428The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
429The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
430A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
431A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
432The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
433An investigation into the effects of Alton sewage works on the River Wey North
434A brief history of the River Stour navigation : 1705 to the present day
435The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
436Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
437Protecting your future : tackling flooding in the Thames Estuary through the 21st century
438The land-use planning system and the Water Framework Directive (can't read barcode)
439The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
440Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
441Report 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
442A 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
443Responses 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
444Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
445A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
446Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
447Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
448Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
449East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
450Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers