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651Snapshots of the environment : managing our freshwater fisheries
652The effects of fishing at low water levels
6531967 - George and Gideon cutting mbati for the bedroom block.
6541967 - Quakers arriving on the shore of L.George.
655First annual review of the Taw/Torridge estuary catchment management plan (1996)
656Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
657Method for the assessment of river water quality using benthic macroinvertebrates
658Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
659The National Groundwater and Contaminated Land Centre (NGWCLC)
660The evaluation of a Philips ammonium ion selective electrode (220/14/T)
661The greening of Grasmere: its plankton periodicity in 1988
662A strategic review of the petroleum refinery Industry Sector
663Guidelines for river corridor surveys in the NRA : February 1992. draft 3
664Contribution of small streams to potential fish production in the Conwy catchment
665NRA strategy for reducing the concentration of pesticides in controlled waters
666The ecology and management of riverine trees : interim report
667Low-cost modifications of the Crump weir to improve fish passage
668Policy and practice for the protection of floodplains
669The Yarrow catchment : recommendations for statutory water quality objectives
670Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
671The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
672Guidance on the use of Bioassays in Ecological Risk Assessment
673The National Rivers Authority employee attitude survey : summary
674The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
675Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)