TY  - BOOK
AU  - Indian Standards Institution
TI  - IS: 13947 - Part 5 - Section 1 - 1993 (Amendment No.1 - 1997); Specification for Low-Voltage Switchgear and Controlgear Part 5; Control Circuit Devices and Switchgear Elements Section 1; Electromechanical Control Circuit Devices
PY  - 1997///
CY  - New Delhi
PB  - BIS
ER  -