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  -