| |||
| petroleum production (Alexander Demidov) | |||
| oil and gas production (MichaelBurov); oil and gas recovery (MichaelBurov) | |||
|
газонефтедобыч : 2 phrases in 1 subject |
| Oil and gas | 2 |
| |||
| petroleum production (Alexander Demidov) | |||
| oil and gas production (MichaelBurov); oil and gas recovery (MichaelBurov) | |||
|
газонефтедобыч : 2 phrases in 1 subject |
| Oil and gas | 2 |