576 | The National Rivers Authority employee attitude survey : summary |
577 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
578 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
579 | Pesticides in the aquatic environment 1997 : executive summary |
580 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
581 | Mercury and methylmercury in the river Yare, Norfolk (OI/420/8/A) |
582 | Draft protocol for the derivation of Toxicity Based Consents |
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 | (Bilingual) Assessing the impact of dewatering on water resources |
590 | Catches of Brown Trout in the River Don |
591 | Biological water quality monitoring in the Midlands region |
592 | A natural assets register for the Sankey catchment. Volume 2 |
593 | Non-compliance with water quality objectives on the Croyde stream (upper catchment) |
594 | Bacteriological monitoring of freshwater rivers in the Thames Region 1995 |
595 | Impact of breakwaters on the water quality of Sidmouth beach |
596 | Bass fishing in the Fal estuary and coastal area |
597 | Report on the survey of SBM handlers in Devon |
598 | Enhancing the environment : 25 case studies from Thames Region |
599 | Fish Guide 1997/98 A Guide to day ticket fisheries in the Midlands |
600 | Flood warning information for the river Witham and tributaries in Lincolnshire |