Symposium on coal utilization; trends and challenges Vol. I resource quality assessment, coal preparation and benefication held at Dhanbad from 13 to 14 December 1989
Symposium on coal utilization; trends and challenges Vol. I resource quality assessment, coal preparation and benefication held at Dhanbad from 13 to 14 December 1989
- Dhanbad CFRI 1989
662.66(063) / CEN,1.89
662.66(063) / CEN,1.89