3134 — Petroleum and natural gas refining plant operators
Descendants
This heading has no descendants because it belongs to the most detailed level of the classification.
| Code | Description |
|---|---|
| 3134 | Técnicos de refinerías de petróleo y gas natural |
| Code | Description |
|---|---|
| 3134 | Tècnics de refineries de petroli i gas natural |