deep seismic sounding
| by
| refraction methods
| deep seismic sounding abbr. | |
| UN geol. | levés de sismique profonde |
| by abbr. | |
| patents. | par; au moyen de |
| refraction method abbr. | |
| construct. | méthode des ondes réfractées |
| |||
| levés de sismique profonde | |||
|
deep seismic sounding : 6 phrases in 1 subject |
| United Nations | 6 |