000 00249nam a2200073 4500
080 _a
_b
245 _aIEC: 517 - 1975; High-voltage metal-enclosed switchgear for rated voltages of 72.5kV and above
700 _aInternational Electrotechnical Commission
260 _aGeneva
_bIEC
_c1975
300 _a51p
999 _c31860
_d31860