000 00453nam a22001337a 4500
999 _c3025
_d3025
003 OSt
005 20181121115150.0
008 181121b ||||| |||| 00| 0 eng d
040 _cNational Acoustics Laboratories
110 _aInternational Electrotechnical Commission
245 _aCEI IEC 61669. Electroacoustics - Equipment for the measurement of real-ear acoustical characteristics of hearing aids
260 _aGeneva
_bCEI
_c2001
942 _2udc
_cBOOK