000 | 00440nam a2200133 4500 | ||
---|---|---|---|
999 |
_c178657 _d178657 |
||
027 |
_aIEC publication 268-1B _q1972 |
||
041 | _aeng | ||
942 | _cSD | ||
110 | _aINTERNATIONAL ELECTROTECHNICAL COMMISSION | ||
245 | _aIEC publication 268-1B : second supplement to publication 268-1(1968) : sound system equipment : part 1 : general | ||
260 |
_aGeneva _bINTERNATIONAL ELECTROTECHNICAL COMMISSION |
||
300 | _a13p. | ||
500 | _aSTD3186 |