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576Distribution of Azolla in the Great Ouse catchment
577Leachate Monitoring For The Brogborough Test Cell Project
578Time of travel on the [River] Chertsey Bourne under low flow conditions
579Regional fishing guide : a guide to day ticket waters in the Midlands
580Flood warning information for the Hertfordshire/Essex border : River Stort catchment
581River Axe Fish Study - Evaluation of Fish Movements in the Estuary
582Waste : strategic waste management survey : landfill within the East Midlands planning region
583Sustainable urban drainage : an introduction : protecting the quality of our environment
584Identification of water quality problems in the Strat and Neet catchments
585Snapshots of the environment : managing our freshwater fisheries
586The effects of fishing at low water levels
5871967 - George and Gideon cutting mbati for the bedroom block.
5881967 - Quakers arriving on the shore of L.George.
589First annual review of the Taw/Torridge estuary catchment management plan (1996)
590Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy
591Method for the assessment of river water quality using benthic macroinvertebrates
592Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
593The National Groundwater and Contaminated Land Centre (NGWCLC)
594The evaluation of a Philips ammonium ion selective electrode (220/14/T)
595The greening of Grasmere: its plankton periodicity in 1988
596A strategic review of the petroleum refinery Industry Sector
597Guidelines for river corridor surveys in the NRA : February 1992. draft 3
598Contribution of small streams to potential fish production in the Conwy catchment
599NRA strategy for reducing the concentration of pesticides in controlled waters
600The ecology and management of riverine trees : interim report