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601Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
602The National Groundwater and Contaminated Land Centre (NGWCLC)
603The evaluation of a Philips ammonium ion selective electrode (220/14/T)
604The greening of Grasmere: its plankton periodicity in 1988
605A strategic review of the petroleum refinery Industry Sector
606Guidelines for river corridor surveys in the NRA : February 1992. draft 3
607Second annual review of the Sid/Otter catchment management plan 1999
608Contribution of small streams to potential fish production in the Conwy catchment
609The ecology and management of riverine trees : interim report
610Policy and practice for the protection of groundwater - Thames region appendix
611Policy and practice for the protection of floodplains
612'Sea Vigil' water quality monitoring : the Wash 1992-1993
613Second annual review of the Seaton, Looe and Fowey catchment management plan
614The Yarrow catchment : recommendations for statutory water quality objectives
615Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
616The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
617Guidance on the use of Bioassays in Ecological Risk Assessment
618The National Rivers Authority employee attitude survey : summary
619Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
620Pesticides in the aquatic environment 1997 : executive summary
621Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
622Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
623The Louth coastal catchment management plan : final report
624Snapshots of the environment : a new environmental approach
625Draft protocol for the derivation of Toxicity Based Consents