000 00247nam a2200073 4500
080 _a
_b
245 _aIEC: 50(60) - 1970; International electrotechnical vocabulary Group 60: radiocommunications
700 _aInternational Electrotechnical Commission
260 _aGeneva
_bIEC
_c1970
300 _a275p
999 _c35620
_d35620