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626A strategic review of the petroleum refinery Industry Sector
627Guidelines for river corridor surveys in the NRA : February 1992. draft 3
628Second annual review of the Sid/Otter catchment management plan 1999
629Contribution of small streams to potential fish production in the Conwy catchment
630The ecology and management of riverine trees : interim report
631Low-cost modifications of the Crump weir to improve fish passage
632Policy and practice for the protection of groundwater - Thames region appendix
633Policy and practice for the protection of floodplains
634'Sea Vigil' water quality monitoring : the Wash 1992-1993
635Second annual review of the Seaton, Looe and Fowey catchment management plan
636The Yarrow catchment : recommendations for statutory water quality objectives
637Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
638The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
639Guidance on the use of Bioassays in Ecological Risk Assessment
640The National Rivers Authority employee attitude survey : summary
641The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
642Pesticides in the aquatic environment 1997 : executive summary
643Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
644The Louth coastal catchment management plan : final report
645Fine sediment deposition in the River Keer : geomorphological assessment
646Draft protocol for the derivation of Toxicity Based Consents
647The Loddon catchment, Thames : recommendations for statutory water quality objectives
648Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
649Second Coniston OS map related to the Seismic Survey 1983
650Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983