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551Time of travel on the [River] Chertsey Bourne under low flow conditions
552Regional fishing guide : a guide to day ticket waters in the Midlands
553An investigation into the sewage system and storm overflow at Beer (1997)
554Flood warning information for the Hertfordshire/Essex border : River Stort catchment
555Waste : strategic waste management survey : landfill within the East Midlands planning region
556Sustainable urban drainage : an introduction : protecting the quality of our environment
557Identification of water quality problems in the Strat and Neet catchments
558Snapshots of the environment : managing our freshwater fisheries
559The effects of fishing at low water levels
5601967 - George and Gideon cutting mbati for the bedroom block.
5611967 - Quakers arriving on the shore of L.George.
562First annual review of the Taw/Torridge estuary catchment management plan (1996)
563Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
564Method for the assessment of river water quality using benthic macroinvertebrates
565Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
566The National Groundwater and Contaminated Land Centre (NGWCLC)
567The evaluation of a Philips ammonium ion selective electrode (220/14/T)
568The greening of Grasmere: its plankton periodicity in 1988
569A strategic review of the petroleum refinery Industry Sector
570Guidelines for river corridor surveys in the NRA : February 1992. draft 3
571Second annual review of the Sid/Otter catchment management plan 1999
572Contribution of small streams to potential fish production in the Conwy catchment
573NRA strategy for reducing the concentration of pesticides in controlled waters
574Low-cost modifications of the Crump weir to improve fish passage
575Second annual review of the Seaton, Looe and Fowey catchment management plan