Flexible steel conduit and adaptors for the protection of electric cable /
Flexible steel conduit and adaptors for the protection of electric cable /
British Standards Institution
- 13 leaves : illustrations ; 30 cm.
- British standard ; BS 731 : Part 1 : 1952 .
- British standard ; BS 731 : Part 1 : 1952 .
Standards, Engineering--Great Britain.
Standards, Engineering--Great Britain.
