1 | Summary of monitoring activities on the blackwater estuary |
2 | The River Colne Estuary subtidal biological survey 1992 |
3 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
4 | 'Sea Vigil' water quality monitoring : the East Anglian coast 1994 |
5 | River Stour (2), Sudbury : report of a river corridor survey carried out for the National Rivers Authority, Anglian region |