TY  - BOOK
AU  - Johns , A.T.
TI  - Digital protection for power systems
SN  - 9789381893012
U1  - 621.317 
PY  - 2012///
CY  - New Delhi
PB  - Shankar book agency pvt.ltd. , 
KW  - Electric power systems -- Protection
KW  - Protective relays
KW  - Electrical Engineering
ER  -