626 | Contribution of small streams to potential fish production in the Conwy catchment |
627 | NRA strategy for reducing the concentration of pesticides in controlled waters |
628 | The ecology and management of riverine trees : interim report |
629 | Low-cost modifications of the Crump weir to improve fish passage |
630 | Policy and practice for the protection of floodplains |
631 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
632 | The Yarrow catchment : recommendations for statutory water quality objectives |
633 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |
634 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
635 | Guidance on the use of Bioassays in Ecological Risk Assessment |
636 | The National Rivers Authority employee attitude survey : summary |
637 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
638 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
639 | Pesticides in the aquatic environment 1997 : executive summary |
640 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
641 | Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A) |
642 | The Louth coastal catchment management plan : final report |
643 | Fine sediment deposition in the River Keer : geomorphological assessment |
644 | Draft protocol for the derivation of Toxicity Based Consents |
645 | The Loddon catchment, Thames : recommendations for statutory water quality objectives |
646 | Assessment of the Impact of Nutrient Removal on Eutrophic Rivers |
647 | Second Coniston OS map related to the Seismic Survey 1983 |
648 | Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
649 | Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
650 | Coniston OS map related to the Seismic Survey 1983 |