000 00265nam a2200073 4500
080 _a
_b
245 _aIEC: 669-1-1981; Switches for household and similar fixed-electrical installations part1 general requirements
700 _aInternational Electrotechnical Commission
260 _aGeneva
_bIEC
_c1981
300 _a112p
999 _c30053
_d30053