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601Snapshots of the environment : managing our freshwater fisheries
602The effects of fishing at low water levels
6031967 - George and Gideon cutting mbati for the bedroom block.
6041967 - Quakers arriving on the shore of L.George.
605First annual review of the Taw/Torridge estuary catchment management plan (1996)
606Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
607Method for the assessment of river water quality using benthic macroinvertebrates
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
612Contribution of small streams to potential fish production in the Conwy catchment
613The ecology and management of riverine trees : interim report
614Low-cost modifications of the Crump weir to improve fish passage
615Policy and practice for the protection of groundwater - Thames region appendix
616Policy and practice for the protection of floodplains
617'Sea Vigil' water quality monitoring : the Wash 1992-1993
618The Yarrow catchment : recommendations for statutory water quality objectives
619Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
620The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
621Guidance on the use of Bioassays in Ecological Risk Assessment
622The National Rivers Authority employee attitude survey : summary
623The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
624Pesticides in the aquatic environment 1997 : executive summary
625Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)