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#Title
626The greening of Grasmere: its plankton periodicity in 1988
627A strategic review of the petroleum refinery Industry Sector
628Guidelines for river corridor surveys in the NRA : February 1992. draft 3
629Contribution of small streams to potential fish production in the Conwy catchment
630NRA strategy for reducing the concentration of pesticides in controlled waters
631The ecology and management of riverine trees : interim report
632Low-cost modifications of the Crump weir to improve fish passage
633'Sea Vigil' water quality monitoring : the Wash 1992-1993
634Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
635The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
636Guidance on the use of Bioassays in Ecological Risk Assessment
637The National Rivers Authority employee attitude survey : summary
638The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
639Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
640Pesticides in the aquatic environment 1997 : executive summary
641Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
642Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
643The Louth coastal catchment management plan : final report
644Fine sediment deposition in the River Keer : geomorphological assessment
645Snapshots of the environment : a new environmental approach
646Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
647Second Coniston OS map related to the Seismic Survey 1983
648Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
649Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
650Coniston OS map related to the Seismic Survey 1983