An introduction to the design of underground openings for defense
| Egile nagusia: | |
|---|---|
| Beste egile batzuk: | |
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Golden
s.n.
1951.
|
| Saila: | Quarterly of the Colorado School of Mines
v.46, no.1 |
| Gaiak: |