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| Er | |
| estud. | El |
| er | |
| gen. | ... he |
| tec. | it; he |
| Graphit | |
| gen. | graphite; plumbago |
| mineral. | black-lead |
| minería | pot lead |
| quím. | mineral carbon; backlead |
| tec. | black lead |
| Graphit... | |
| minería | plumbaginous |
| quím. | graphitic |
| Graphite | |
| gen. | graphites |
|
wei : 19 a las frases, 4 temas |
| Agricultura | 1 |
| Ingeniería mecánica | 5 |
| Medicina | 2 |
| Metalurgia | 11 |