Технический прогресс и труд на предприятиях по добыче угля
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | Russian |
| Published: |
М
Недра
1973
|
| Subjects: |
| Physical Description: | 190с |
|---|
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | Russian |
| Published: |
М
Недра
1973
|
| Subjects: |
| Physical Description: | 190с |
|---|