Нефть олзворын үйлдвэрийн аюулаас хамгаалах техникийн дүрэм
| Format: | Unknown |
|---|---|
| Language: | Mongolian |
| Published: |
УБ
УБТЗХ
1961
|
| Edition: | 1 |
| Subjects: |
| Physical Description: | 53х |
|---|
| Format: | Unknown |
|---|---|
| Language: | Mongolian |
| Published: |
УБ
УБТЗХ
1961
|
| Edition: | 1 |
| Subjects: |
| Physical Description: | 53х |
|---|