| |||
| colcotar; óxido férrico; óxido de hierro | |||
| |||
| óxido ferroso-férrico | |||
| |||
| óxidos de hierro | |||
|
iron oxide : 41 phrases in 9 subjects |
| Accumulators | 2 |
| Chemistry | 25 |
| Coal | 2 |
| Environment | 1 |
| Industry | 2 |
| Metallurgy | 5 |
| Mining | 2 |
| Oil / petroleum | 1 |
| Technology | 1 |
| |||
| colcotar; óxido férrico; óxido de hierro | |||
| |||
| óxido ferroso-férrico | |||
| |||
| óxidos de hierro | |||
|
iron oxide : 41 phrases in 9 subjects |
| Accumulators | 2 |
| Chemistry | 25 |
| Coal | 2 |
| Environment | 1 |
| Industry | 2 |
| Metallurgy | 5 |
| Mining | 2 |
| Oil / petroleum | 1 |
| Technology | 1 |