 |
| |||
| commercial bed; commercial seam; minable seam | |||
| commercial formation | |||
| payable seam; workable seam | |||
| пласт, пригодный для разработки: 4 phrases in 3 subjects |
| Geology | 1 |
| Mining | 1 |
| Oil / petroleum | 2 |
|
| |||
| commercial bed; commercial seam; minable seam | |||
| commercial formation | |||
| payable seam; workable seam | |||
| пласт, пригодный для разработки: 4 phrases in 3 subjects |
| Geology | 1 |
| Mining | 1 |
| Oil / petroleum | 2 |