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451Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme
452The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
453Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report
454The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
455The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
456A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
457A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
458A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
459The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
460An investigation into the effects of Alton sewage works on the River Wey North
461Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
462A brief history of the River Stour navigation : 1705 to the present day
463The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
464Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
465The land-use planning system and the Water Framework Directive (can't read barcode)
466The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
467Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
468A 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
469Responses 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
470Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
471A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
472Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
473Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
474Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
475East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe