| • coal liquefaction | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| द्रवण: fusion condensation liquefaction colliquation | |
कोयला द्रवण अंग्रेज़ी में
[ koyala dravan ]
| • coal liquefaction | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| द्रवण: fusion condensation liquefaction colliquation | |
