000 00299nam a2200085Ia 4500
008 180131b1973 xxu||||| |||| 00| 0 eng d
080 _a
_b
100 _aInternational Electrotechnical Commission
245 _aIec: 337 - 1a - 1973; First Supplement To Publication 337 Control Switches (Low-Voltage Switching De
260 _a
_bIEC
_c1973
999 _c49960
_d49960