| • coal grading board | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| श्रेणीकरण: gradation grading classification sorting | |
| बोर्ड: board facia fascia advisory board conciliation | |
कोयला श्रेणीकरण बोर्ड अंग्रेज़ी में
[ koyala shrenikaran borda ]
| • coal grading board | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| श्रेणीकरण: gradation grading classification sorting | |
| बोर्ड: board facia fascia advisory board conciliation | |
