TY  - BOOK
ED  - India. Ministry of Steel, Mines and Coal
TI  - Report of the working group on coal and lignite: seventh five year plan (1986-86 to 1989-90)
U1  - 553.220954 21st
PY  - 1985///
CY  - New Delhi
PB  - Ministry of Steel, Mines and Coal
KW  - Coal-India; Lignite-India; Coal mines and mining-India
ER  -