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426The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual)
427The Use of Immuno Based Techniques for Chemical Analysis
428Snapshots of the environment : integrated river basin management
429Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991
430Snapshots of the environment : understanding coastal water quality
431The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T)
432The evaluation of ingold ion selective ammonium electrode (220/23/T)
433Stratification in the Severn Estuary- Physical aspects and biological consequences
434The Mersey estuary : a report on environmental quality
435'Sea Vigil' water quality monitoring : the East coast 1992-1993
436Catches of migratory fish in the River Don, Aberdeenshire
437Stream survey and assessment in the Ashford and Folkestone areas
438The evaluation of an orion ammonium ion selective electrode (220/15/T)
439Dissemination of the Revitalised FEH Rainfall-runoff Method
440General guide to the prevention of water pollution
441Highway runoff: Effects of soluble pollutants on the ecology of receiving waters
442Life cycle assessment of disposable and reusable nappies in the UK
443Managing the social aspects of flooding: Synthesis Report
444Model For Investigating The Impacts Of Groundwater Abstraction
445Operational mechanisms for the protection and enhancement of headwaters
446Policy and practice for the protection of groundwater : regional appendix Welsh region
447Procurement legislation and the NRA : a brief guide
448Survey of copper speciation in the Great Ouse estuary
449Sustainable development indicators : monitoring change in the East Midlands
450Technical Support Materials for the Regulation of Radioactively Contaminated Land