| Spanisch | Englisch | |
|---|---|---|
| Chemistry | ||
| Chemistry | formación carbonífera [f] | coal formation |
| Geology | ||
| Geology | formación carbonífera [f] | coal formation |
| Geology | formación carbonífera | coal formation |
| Mining | ||
| Mining | formación carbonífera [f] | coal formation |
| Mining | formación carbonífera | coal-bearing formation |
| Mining | formación carbonífera | coal measures |
| Energy | ||
| Energy | formación carbonífera | carboniferous formation |
