1 | The rehabilitation of the River Taff |
2 | A report on the investigation of the Taff litter problem |
3 | The investigation of the Taff litter problem : report no. PL/EAE/89/2 |
4 | A survey of ferruginous minewater impacts in the Welsh coalfields |
5 | A survey of ferruginous minewater impacts in the Welsh coalfields |