626 | NRA strategy for reducing the concentration of pesticides in controlled waters |
627 | The ecology and management of riverine trees : interim report |
628 | Low-cost modifications of the Crump weir to improve fish passage |
629 | Policy and practice for the protection of groundwater - Thames region appendix |
630 | Policy and practice for the protection of floodplains |
631 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
632 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |
633 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
634 | Guidance on the use of Bioassays in Ecological Risk Assessment |
635 | The National Rivers Authority employee attitude survey : summary |
636 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
637 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
638 | Pesticides in the aquatic environment 1997 : executive summary |
639 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
640 | Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A) |
641 | The Louth coastal catchment management plan : final report |
642 | Fine sediment deposition in the River Keer : geomorphological assessment |
643 | Snapshots of the environment : a new environmental approach |
644 | Draft protocol for the derivation of Toxicity Based Consents |
645 | The Loddon catchment, Thames : recommendations for statutory water quality objectives |
646 | Second Coniston OS map related to the Seismic Survey 1983 |
647 | Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
648 | Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
649 | Coniston OS map related to the Seismic Survey 1983 |
650 | The flood of February 1990 : technical services flood monitoring report |