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726A strategic review of the petroleum refinery Industry Sector
727Guidelines for river corridor surveys in the NRA : February 1992. draft 3
728Second annual review of the Sid/Otter catchment management plan 1999
729Contribution of small streams to potential fish production in the Conwy catchment
730NRA strategy for reducing the concentration of pesticides in controlled waters
731Low-cost modifications of the Crump weir to improve fish passage
732Policy and practice for the protection of groundwater - Thames region appendix
733Policy and practice for the protection of floodplains
734'Sea Vigil' water quality monitoring : the Wash 1992-1993
735Second annual review of the Seaton, Looe and Fowey catchment management plan
736The Yarrow catchment : recommendations for statutory water quality objectives
737Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
738The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
739Guidance on the use of Bioassays in Ecological Risk Assessment
740The National Rivers Authority employee attitude survey : summary
741The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
742Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
743Pesticides in the aquatic environment 1997 : executive summary
744Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
745The Louth coastal catchment management plan : final report
746Fine sediment deposition in the River Keer : geomorphological assessment
747Snapshots of the environment : a new environmental approach
748Draft protocol for the derivation of Toxicity Based Consents
749The Loddon catchment, Thames : recommendations for statutory water quality objectives
750Assessment of the Impact of Nutrient Removal on Eutrophic Rivers