TY  - BOOK
AU  - Singh, L.P.
TI  - Digital protection: : protective relaying from electromechanical to microprocessor
SN  - 8122410537
U1  - 005.8 
PY  - 1997///
CY  - New Delhi
PB  - ; New Age International
KW  - Computer Security
KW  - Data Security
ER  -