| 000 | 00395nam a2200133 4500 | ||
|---|---|---|---|
| 999 |
_c178672 _d178672 |
||
| 027 |
_aIEC publication 268-4 _q1972 |
||
| 041 | _aeng | ||
| 942 | _cSD | ||
| 110 | _aINTERNATIONAL ELECTROTECHNICAL COMMISSION | ||
| 245 | _aIEC publication 268-4 : sound system equipment : part 4 : microphones | ||
| 260 |
_aGeneva _bINTERNATIONAL ELECTROTECHNICAL COMMISSION |
||
| 300 | _a71p. | ||
| 500 | _aSTD3190 | ||