TY  - BOOK
AU  - Oliver,Frank J.
TI  - Practical relay circuits
SN  - 027331808X
U1  - 621.317 
PY  - 1973///
CY  - Johannesburg
PB  - Pitman Pub
KW  - Electric relays
KW  - Electric circuit
KW  - breakers
KW  - Relay control systems
KW  - Electric switchgear
N1  - Includes bibliographical references and index
ER  -