| • intermediate coal | |
| माध्यमिक: secondary intermediate transitional | |
| कोयला: carbon coal collier brown coal lignite fuel | |
माध्यमिक कोयला अंग्रेज़ी में
[ madhyamik koyala ]
| • intermediate coal | |
| माध्यमिक: secondary intermediate transitional | |
| कोयला: carbon coal collier brown coal lignite fuel | |
