 |
| |||
| глина с кремнёвыми стяжениями; клэйфлинт | |||
| clay flint: 11 phrases in 8 subjects |
| Agrochemistry | 1 |
| Cement | 1 |
| Chemistry | 2 |
| General | 1 |
| Geology | 3 |
| Seismology | 1 |
| Silicate industry | 1 |
| Technology | 1 |
|
| |||
| глина с кремнёвыми стяжениями; клэйфлинт | |||
| clay flint: 11 phrases in 8 subjects |
| Agrochemistry | 1 |
| Cement | 1 |
| Chemistry | 2 |
| General | 1 |
| Geology | 3 |
| Seismology | 1 |
| Silicate industry | 1 |
| Technology | 1 |