Proceedings 1987 Rapid Excavation and Tunneling Conference, New Orleans, Louisiana, June 14-18, 1987
| Egile korporatiboa: | , , |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Littleton, Colo.
Society of Mining Engineers
c1987.
|
| Gaiak: |


