| • coal preparation | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| निर्मिति: build up coinage preparation structure | |
कोयला निर्मिति in English
[ koyala nirmiti ] sound:
| • coal preparation | |
| कोयला: carbon coal collier brown coal lignite fuel | |
| निर्मिति: build up coinage preparation structure | |
