Browsing by Author Helm, Peter Rennie
Showing results 1 to 1 of 1
| Issue Date | Title | Author(s) |
|---|---|---|
| 2011 | Analysis of the stability of shallow abandoned colliery workings | Helm, Peter Rennie |
| Issue Date | Title | Author(s) |
|---|---|---|
| 2011 | Analysis of the stability of shallow abandoned colliery workings | Helm, Peter Rennie |