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651A strategic review of the petroleum refinery Industry Sector
652Guidelines for river corridor surveys in the NRA : February 1992. draft 3
653Second annual review of the Sid/Otter catchment management plan 1999
654NRA strategy for reducing the concentration of pesticides in controlled waters
655The ecology and management of riverine trees : interim report
656Low-cost modifications of the Crump weir to improve fish passage
657Policy and practice for the protection of groundwater - Thames region appendix
658'Sea Vigil' water quality monitoring : the Wash 1992-1993
659Second annual review of the Seaton, Looe and Fowey catchment management plan
660The Yarrow catchment : recommendations for statutory water quality objectives
661Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
662The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
663Guidance on the use of Bioassays in Ecological Risk Assessment
664The National Rivers Authority employee attitude survey : summary
665Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
666Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
667Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
668The Louth coastal catchment management plan : final report
669Fine sediment deposition in the River Keer : geomorphological assessment
670Draft protocol for the derivation of Toxicity Based Consents
671The Loddon catchment, Thames : recommendations for statutory water quality objectives
672Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
673Second Coniston OS map related to the Seismic Survey 1983
674Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
675Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983