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| coal The natural, rocklike, brown to black derivative of forest-type plant material, usually accumulated in peat beds and progressively compressed and indurated until it is finally altered in to graphite-like material | |||
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ogle : 25 צירופים, 6 נושאים |
| כִּימִיָה | 8 |
| כַּלְכָּלָה | 3 |
| כללי | 4 |
| סביבה | 7 |
| פּוֹלִיטִיקָה | 1 |
| תעשיית האנרגיה | 2 |