 |
| |||
| farine fossile; farine tellurine; terre de diatomées ou d’infusoires; kieselguhr m | |||
|
fossil meal : 2 phrases in 2 subjects |
| Chemistry | 1 |
| Mining | 1 |
|
| |||
| farine fossile; farine tellurine; terre de diatomées ou d’infusoires; kieselguhr m | |||
|
fossil meal : 2 phrases in 2 subjects |
| Chemistry | 1 |
| Mining | 1 |