1 | An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95] |
2 | An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991) |
3 | Environmental assessment of selected abandoned minewaters in the North East region |
4 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |