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6601National Centre for Toxic and Persistent Substances : business case
6602An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report
6603Recreational waterway byelaws in the Anglian region
6604Comparison of concentration values recorded for NMP locations with Annex 1A/OSPARCOM locations
6605Continuous water quality monitoring results for the Carnon river
6606The Impact Of Discarded Fishing Line And Tackle On Mute Swans - Phase 1
6607Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report
6608Heavy metal contaminants in fish caught from the Mersey Estuary and inshore Liverpool Bay
6609Monitoring of freshwaters for E.C. dangerous substances list 1 and list 2, 1990
6610An assessment of the NRA algal growth inhibition test : 1993/4
6611Carnon River EC dangerous substance directive failure : final draft report
6612Red River (R23A003) EC Dangerous Substance Directive failure 1994 : May 1996. COR/96/004
6613Zinc in estuaries (Note 390)
6614Results of the NRA Welsh regional marine bioaccumulation programme 1991-1993 : SE/EAU/94/8
6615Results of the NRA Welsh regional marine bioaccumulation programme 1991-1995 : SE/EAU/95/9
6616Wheal Jane : a clear way forward
6617A report on the investigation of the Taff litter problem
6618Abandoned mines and the water environment : report of the National Rivers Authority
6619Pilot environmental audit : NRA Darlington district office : Northumbria and Yorkshire region
6620The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
6621A review of the industrial uses of continuous monitoring systems : minerals industry processes
6622Anglian region state of the environment report : the IPC perspective
6623Aquatic Litter Information System - Using Digital Technologies
6624Aquatic pesticide pollution incidents in England and Wales - 1994 - 1995
6625Attenuation of nitrate in the sub-surface environment