Крепление горных выработок угольных шахт Сборник статей
| Corporate Author: | |
|---|---|
| Format: | Book |
| Language: | Russian |
| Published: |
М
Углетехиздат
1957
|
| Subjects: |
| Corporate Author: | |
|---|---|
| Format: | Book |
| Language: | Russian |
| Published: |
М
Углетехиздат
1957
|
| Subjects: |