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426The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
427A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
428A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
429A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
430The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
431An investigation into the effects of Alton sewage works on the River Wey North
432Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
433A brief history of the River Stour navigation : 1705 to the present day
434The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
435Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
436Protecting your future : tackling flooding in the Thames Estuary through the 21st century
437The land-use planning system and the Water Framework Directive (can't read barcode)
438The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
439Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
440Report 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
441A 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
442Responses 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
443Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
444A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
445Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
446Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
447East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
448Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
449Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
450A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.