Aggregates sand, gravel and crushed rock aggregates for construction purposes
| Awduron Eraill: | , , |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
London
Geological Society
2001.
|
| Rhifyn: | 3rd ed. |
| Cyfres: | Engineering geology special publication
no. 17. |
| Pynciau: |


