| 000 | 00410nam a2200121 4500 | ||
|---|---|---|---|
| 999 |
_c178758 _d178758 |
||
| 027 |
_aIEC publication 67B _q1969 |
||
| 041 | _aeng | ||
| 942 | _cSD | ||
| 110 | _aINTERNATIONAL ELECTROTECHNICAL COMMISSION | ||
| 245 | _aIEC publication 67B : second supplement to publication 67(1966) : dimensions of electronic tubes and valves | ||
| 260 |
_aGeneva _bINTERNATIONAL ELECTROTECHNICAL COMMISSION |
||
| 500 | _aSTD3215 | ||