An introduction to the design of underground openings for defense
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Golden
s.n.
1951.
|
| Cyfres: | Quarterly of the Colorado School of Mines
v.46, no.1 |
| Pynciau: |