000 00246nam a2200073 4500
080 _a
_b
245 _aIEC: 56 - 1987 Amendment No.1 - 1992; High-voltage alternating-current circuit-breakers
700 _aInternational Electrotechnical Commission
260 _aGeneva
_bIEC
_c1987
300 _a329+25p
999 _c34539
_d34539