000 00233nam a2200073 4500
080 _a
_b
245 _aBS-0862 - 1939; Air-Break Circuit-Breakers including totally-enclosed and flameproof types
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1939
300 _a24p
999 _c24622
_d24622