 |
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| pipeline service | |||
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| pipeline maintenance | |||
| maintaining the pipeline | |||
| обслуживание трубопроводов: 13 do fraz, 8 tematyki |
| Budownictwo | 1 |
| Logistyka | 2 |
| Odzyskiwanie po awarii | 1 |
| Ropa / ropa naftowa | 1 |
| Sachalin | 2 |
| Technika i technologia | 1 |
| Technologia ropy i gazu | 1 |
| Wojskowość | 4 |