TY  - BOOK
AU  - Bass, E.
AU  - Berkovich, M.
AU  - Savostyanov, A.
TI  - Relay Protection Electrician
U1  - 621.317 
PY  - 1967///
CY  - Moscow
PB  - Mie Publishers
KW  - Protective relays
N1  - Includes Index
ER  -