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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
429The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
430An investigation into the effects of Alton sewage works on the River Wey North
431Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
432A brief history of the River Stour navigation : 1705 to the present day
433The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
434Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
435Protecting your future : tackling flooding in the Thames Estuary through the 21st century
436The land-use planning system and the Water Framework Directive (can't read barcode)
437The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
438Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
439Report 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
440A 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
441Responses 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
442Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
443Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
444Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
445Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
446East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
447Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
448Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
449Report on the national marine analytical quality control scheme 1992/93 (MPMMG 93/12) : presented to the October 1993 meeting of the Marine Pollution Monitoring Management Group
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.