TY  - BOOK
AU  - RAO T.S.M
TI  - DIGITAL NUMERICAL RELAYS
T2  - P3657
SN  - 9780070588554
U1  -  513.5 RAO 
PY  - 2005///
CY  - India
PB  - TATA MCGRAWHILL
KW  - Electrical and Electronics Engineering
N1  - PAI&SONS
ER  -