TY  - BOOK
AU  - Hartman,Howard L.
AU  - Mutmansky,Jan M.
TI  - Introductory mining engineering 
SN  - 8126511354
U1  - 622 HAR M  
PY  - 2007///
CY  - New Delhi : 
PB  - Wiley Indi Pvt. Ltd., 
KW  - Mine development
KW  - Unit operations
ER  -