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351Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme
352Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report
353The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
354A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
355A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
356The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
357An investigation into the effects of Alton sewage works on the River Wey North
358A brief history of the River Stour navigation : 1705 to the present day
359The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
360Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
361Protecting your future : tackling flooding in the Thames Estuary through the 21st century
362The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
363Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
364Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
365A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
366Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
367East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
368Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
369Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
370Report 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
371A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
372The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
3731995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments
374Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
375The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates