626 | The greening of Grasmere: its plankton periodicity in 1988 |
627 | A strategic review of the petroleum refinery Industry Sector |
628 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
629 | Contribution of small streams to potential fish production in the Conwy catchment |
630 | NRA strategy for reducing the concentration of pesticides in controlled waters |
631 | The ecology and management of riverine trees : interim report |
632 | Low-cost modifications of the Crump weir to improve fish passage |
633 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
634 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |
635 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
636 | Guidance on the use of Bioassays in Ecological Risk Assessment |
637 | The National Rivers Authority employee attitude survey : summary |
638 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
639 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
640 | Pesticides in the aquatic environment 1997 : executive summary |
641 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
642 | Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A) |
643 | The Louth coastal catchment management plan : final report |
644 | Fine sediment deposition in the River Keer : geomorphological assessment |
645 | Snapshots of the environment : a new environmental approach |
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 |