Расчет и выбор крепи сопряжений горных выработок
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | Undetermined |
| Published: |
М
Недра,
1988
|
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | Undetermined |
| Published: |
М
Недра,
1988
|