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426The physical character of rivers and streams in the UK and Isle of Man
427Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme
428The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
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)
439A 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
440Responses 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
441Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
442Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
443Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
444East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
445Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
446Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
447Report 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
448A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
449The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
4501995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments