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476The National Groundwater and Contaminated Land Centre (NGWCLC)
477The evaluation of a Philips ammonium ion selective electrode (220/14/T)
478The greening of Grasmere: its plankton periodicity in 1988
479A strategic review of the petroleum refinery Industry Sector
480NRA strategy for reducing the concentration of pesticides in controlled waters
481'Sea Vigil' water quality monitoring : the Wash 1992-1993
482Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
483The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
484Guidance on the use of Bioassays in Ecological Risk Assessment
485The National Rivers Authority employee attitude survey : summary
486Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
487Pesticides in the aquatic environment 1997 : executive summary
488The Louth coastal catchment management plan : final report
489Snapshots of the environment : a new environmental approach
490Second Coniston OS map related to the Seismic Survey 1983
491Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
492Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
493Coniston OS map related to the Seismic Survey 1983
494The flood of February 1990 : technical services flood monitoring report
495Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework
496Policy and practice for the protection of groundwater : Southern region appendix
497Uses of the water environment: factsheet number six
498River basin planning and the Water Framework Directive
499(Bilingual) Assessing the impact of dewatering on water resources
500Catches of Brown Trout in the River Don