TY  - BOOK
AU  - Johar Neelam
AU  - University of Delhi. Deptt of Economic.
ED  - University of Delhi. Deptt of Economic.
TI  - Determinants of costs and productivity in coal min
U1  - "X9(HZ551):26.216.N8, M3" 
PY  - 1983///
CY  - Delhi
PB  - University of Delhi India    
KW  - Minings
ER  -