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501Sustainable urban drainage : an introduction : protecting the quality of our environment
502The effects of fishing at low water levels
5031967 - George and Gideon cutting mbati for the bedroom block.
5041967 - Quakers arriving on the shore of L.George.
505First annual review of the Taw/Torridge estuary catchment management plan (1996)
506Method for the assessment of river water quality using benthic macroinvertebrates
507Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide
508The National Groundwater and Contaminated Land Centre (NGWCLC)
509The evaluation of a Philips ammonium ion selective electrode (220/14/T)
510The greening of Grasmere: its plankton periodicity in 1988
511A strategic review of the petroleum refinery Industry Sector
512Guidelines for river corridor surveys in the NRA : February 1992. draft 3
513Contribution of small streams to potential fish production in the Conwy catchment
514NRA strategy for reducing the concentration of pesticides in controlled waters
515Low-cost modifications of the Crump weir to improve fish passage
516Policy and practice for the protection of floodplains
517The Yarrow catchment : recommendations for statutory water quality objectives
518Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere
519The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T)
520Guidance on the use of Bioassays in Ecological Risk Assessment
521The National Rivers Authority employee attitude survey : summary
522The Use of a Hydroacoustic Counter for Assessing Salmon Stocks
523Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A)
524Pesticides in the aquatic environment 1997 : executive summary
525Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment