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526Non-compliance of the Bidwell Brook with river quality objectives
527An investigation into the sewage system and storm overflow at Beer (1997)
528Flood warning information for the Hertfordshire/Essex border : River Stort catchment
529River Axe Fish Study - Evaluation of Fish Movements in the Estuary
530Sustainable urban drainage : an introduction : protecting the quality of our environment
531Snapshots of the environment : managing our freshwater fisheries
532The effects of fishing at low water levels
5331967 - George and Gideon cutting mbati for the bedroom block.
5341967 - Quakers arriving on the shore of L.George.
535First annual review of the Taw/Torridge estuary catchment management plan (1996)
536Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
537Method for the assessment of river water quality using benthic macroinvertebrates
538Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
539The National Groundwater and Contaminated Land Centre (NGWCLC)
540The evaluation of a Philips ammonium ion selective electrode (220/14/T)
541The greening of Grasmere: its plankton periodicity in 1988
542A strategic review of the petroleum refinery Industry Sector
543Guidelines for river corridor surveys in the NRA : February 1992. draft 3
544Contribution of small streams to potential fish production in the Conwy catchment
545NRA strategy for reducing the concentration of pesticides in controlled waters
546Low-cost modifications of the Crump weir to improve fish passage
547Policy and practice for the protection of groundwater - Thames region appendix
548Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
549The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
550Guidance on the use of Bioassays in Ecological Risk Assessment