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701The National Groundwater and Contaminated Land Centre (NGWCLC)
702The evaluation of a Philips ammonium ion selective electrode (220/14/T)
703The greening of Grasmere: its plankton periodicity in 1988
704A strategic review of the petroleum refinery Industry Sector
705Guidelines for river corridor surveys in the NRA : February 1992. draft 3
706Second annual review of the Sid/Otter catchment management plan 1999
707Contribution of small streams to potential fish production in the Conwy catchment
708NRA strategy for reducing the concentration of pesticides in controlled waters
709Low-cost modifications of the Crump weir to improve fish passage
710Policy and practice for the protection of groundwater - Thames region appendix
711Policy and practice for the protection of floodplains
712'Sea Vigil' water quality monitoring : the Wash 1992-1993
713Second annual review of the Seaton, Looe and Fowey catchment management plan
714The Yarrow catchment : recommendations for statutory water quality objectives
715Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
716The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
717Guidance on the use of Bioassays in Ecological Risk Assessment
718The National Rivers Authority employee attitude survey : summary
719The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
720Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
721Pesticides in the aquatic environment 1997 : executive summary
722Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
723The Louth coastal catchment management plan : final report
724Fine sediment deposition in the River Keer : geomorphological assessment
725Snapshots of the environment : a new environmental approach