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701Guidelines for river corridor surveys in the NRA : February 1992. draft 3
702Second annual review of the Sid/Otter catchment management plan 1999
703Contribution of small streams to potential fish production in the Conwy catchment
704NRA strategy for reducing the concentration of pesticides in controlled waters
705The ecology and management of riverine trees : interim report
706Low-cost modifications of the Crump weir to improve fish passage
707Policy and practice for the protection of groundwater - Thames region appendix
708Policy and practice for the protection of floodplains
709'Sea Vigil' water quality monitoring : the Wash 1992-1993
710Second annual review of the Seaton, Looe and Fowey catchment management plan
711The Yarrow catchment : recommendations for statutory water quality objectives
712Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
713The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
714Guidance on the use of Bioassays in Ecological Risk Assessment
715The National Rivers Authority employee attitude survey : summary
716The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
717Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
718Pesticides in the aquatic environment 1997 : executive summary
719Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
720Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
721The Louth coastal catchment management plan : final report
722Fine sediment deposition in the River Keer : geomorphological assessment
723Snapshots of the environment : a new environmental approach
724Draft protocol for the derivation of Toxicity Based Consents
725The Loddon catchment, Thames : recommendations for statutory water quality objectives