TY  - BOOK
AU  - BUREAU OF INDIAN STANDARDS
TI  - IS:09921 (PART 3) - 1982; Specification for alternating current disconnectors(Isolators) and earthing switches for voltages above 1 000 V Part 3; Design and construction
PY  - 1982///
CY  - New Delhi
PB  - BIS
ER  -