000 00271nam a2200073 4500
080 _a
_b
245 _aIEC: 50(701) - 1988; International electrotechnical vocabulary Chapter 701 Telecommunications, channels and networks
700 _aInternational Electrotechnical Commission
260 _aGeneva
_bIEC
_c1988
300 _a45p
999 _c35621
_d35621