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701The evaluation of a Philips ammonium ion selective electrode (220/14/T)
702The greening of Grasmere: its plankton periodicity in 1988
703A strategic review of the petroleum refinery Industry Sector
704Guidelines for river corridor surveys in the NRA : February 1992. draft 3
705Second annual review of the Sid/Otter catchment management plan 1999
706Contribution of small streams to potential fish production in the Conwy catchment
707NRA strategy for reducing the concentration of pesticides in controlled waters
708The ecology and management of riverine trees : interim report
709Low-cost modifications of the Crump weir to improve fish passage
710Policy and practice for the protection of groundwater - Thames region appendix
711Policy and practice for the protection of floodplains
712'Sea Vigil' water quality monitoring : the Wash 1992-1993
713Second annual review of the Seaton, Looe and Fowey catchment management plan
714Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
715The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
716Guidance on the use of Bioassays in Ecological Risk Assessment
717The National Rivers Authority employee attitude survey : summary
718The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
719Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
720Pesticides in the aquatic environment 1997 : executive summary
721Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A)
722The Louth coastal catchment management plan : final report
723Fine sediment deposition in the River Keer : geomorphological assessment
724Snapshots of the environment : a new environmental approach
725Second Coniston OS map related to the Seismic Survey 1983