1 | Contaminants entering the sea : data appendix : data on contaminant loads entering the seas around England and Wales for the years 1990-1993 |
2 | The Mersey estuary : a report on environmental quality |
3 | Discharge consents and compliance : the NRA's approach to control of discharges to water |
4 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
5 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |