576 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
577 | The National Rivers Authority employee attitude survey : summary |
578 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
579 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
580 | Pesticides in the aquatic environment 1997 : executive summary |
581 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
582 | The Louth coastal catchment management plan : final report |
583 | The Loddon catchment, Thames : recommendations for statutory water quality objectives |
584 | Assessment of the Impact of Nutrient Removal on Eutrophic Rivers |
585 | Second Coniston OS map related to the Seismic Survey 1983 |
586 | Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
587 | Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
588 | Coniston OS map related to the Seismic Survey 1983 |
589 | Uses of the water environment: factsheet number six |
590 | First annual review of the River Exe catchment management plan |
591 | First annual review of the Taw/Torridge estuary catchment management plan (1996) |
592 | Flood alleviation proposals for Bakewell and Ashford in the Water |
593 | (Bilingual) Assessing the impact of dewatering on water resources |
594 | Biological water quality monitoring in the Midlands region |
595 | A natural assets register for the Sankey catchment. Volume 2 |
596 | Data mining of calculations for the control of emissions of organic compounds |
597 | Bacteriological monitoring of freshwater rivers in the Thames Region 1995 |
598 | Environmental protection and pollution control : in the North West |
599 | Buckingham flood defence improvements : presentation of the preferred option |
600 | Impact of breakwaters on the water quality of Sidmouth beach |