 |
| |||
| oil and gas collection | |||
| сбор нефти и газа: 42 do fraz, 6 tematyki |
| Olej i gaz | 14 |
| Pola naftowe | 2 |
| Ropa / ropa naftowa | 17 |
| Technika i technologia | 1 |
| Technologia ropy i gazu | 7 |
| Wiercenie | 1 |
|
| |||
| oil and gas collection | |||
| сбор нефти и газа: 42 do fraz, 6 tematyki |
| Olej i gaz | 14 |
| Pola naftowe | 2 |
| Ropa / ropa naftowa | 17 |
| Technika i technologia | 1 |
| Technologia ropy i gazu | 7 |
| Wiercenie | 1 |