TY  - BOOK
ED  - Bureau of Indian Standards
TI  - Air-break switches, air-break disconnectors, air-break switch disconnectors and fuse-combination units for voltages not exceeding 1000 V AC or 1200 V DC, Part 1:general requirements 
U1  - 621.316.542.064.241:621.316.92 
PY  - 1979///
PB  - Bureau of Indian Standards
KW  - Air-break switches
ER  -