| Pilot Tube and other Guided Boring Methods - ASCE Manuals and Reports on Engineering Practice No. 133 - ASCE Manuals and Reports on Engineering Practice (MOP) No. 133 |
| Pilot Tube and other Guided Boring Methods - ASCE Manuals and Reports on Engineering Practice No. 133 - ASCE Manuals and Reports on Engineering Practice (MOP) No. 133 |