TY  - BOOK
AU  - Petrosyan M.I.
TI  - Rock Breakage by blasting
SN  - 81-204-0847-0
U1  - 624.15132 
PY  - 1991///
CY  - new delhi
PB  - raju primiani
KW  - MCE
N1  - 0; 0; 0; 624_151320000000000_PET
ER  -