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726Contribution of small streams to potential fish production in the Conwy catchment
727NRA strategy for reducing the concentration of pesticides in controlled waters
728The ecology and management of riverine trees : interim report
729Low-cost modifications of the Crump weir to improve fish passage
730'Sea Vigil' water quality monitoring : the Wash 1992-1993
731Second annual review of the Seaton, Looe and Fowey catchment management plan
732Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
733The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
734Guidance on the use of Bioassays in Ecological Risk Assessment
735The National Rivers Authority employee attitude survey : summary
736The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
737Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
738Pesticides in the aquatic environment 1997 : executive summary
739Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment
740Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
741The Louth coastal catchment management plan : final report
742Fine sediment deposition in the River Keer : geomorphological assessment
743Snapshots of the environment : a new environmental approach
744The Loddon catchment, Thames : recommendations for statutory water quality objectives
745Assessment of the Impact of Nutrient Removal on Eutrophic Rivers
746Second Coniston OS map related to the Seismic Survey 1983
747Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
748Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983
749Coniston OS map related to the Seismic Survey 1983
750The flood of February 1990 : technical services flood monitoring report