deep seismic sounding
| by
| reflection methods
| deep seismic sounding | |
| UN geol. | levés de sismique profonde |
| by | |
| patents. | par; au moyen de |
| reflection method | |
| el. | méthode de la réflexion |
| |||
| levés de sismique profonde | |||
|
deep seismic sounding : 6 phrases in 1 subject |
| United Nations | 6 |