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601The effects of fishing at low water levels
6021967 - George and Gideon cutting mbati for the bedroom block.
6031967 - Quakers arriving on the shore of L.George.
604First annual review of the Taw/Torridge estuary catchment management plan (1996)
605Method for the assessment of river water quality using benthic macroinvertebrates
606Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
607The National Groundwater and Contaminated Land Centre (NGWCLC)
608The evaluation of a Philips ammonium ion selective electrode (220/14/T)
609The greening of Grasmere: its plankton periodicity in 1988
610A strategic review of the petroleum refinery Industry Sector
611Guidelines for river corridor surveys in the NRA : February 1992. draft 3
612Second annual review of the Sid/Otter catchment management plan 1999
613Contribution of small streams to potential fish production in the Conwy catchment
614NRA strategy for reducing the concentration of pesticides in controlled waters
615The ecology and management of riverine trees : interim report
616Low-cost modifications of the Crump weir to improve fish passage
617Policy and practice for the protection of groundwater - Thames region appendix
618Policy and practice for the protection of floodplains
619'Sea Vigil' water quality monitoring : the Wash 1992-1993
620Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
621The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
622Guidance on the use of Bioassays in Ecological Risk Assessment
623The National Rivers Authority employee attitude survey : summary
624The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
625Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)