| 000 | 00379pam a2200133a 44500 | ||
|---|---|---|---|
| 008 | 140414b1948 xxu||||| |||| 00| 0 eng d | ||
| 082 |
_aD65 _bSPA |
||
| 100 | _aSPANGENBERG, KARL R | ||
| 245 |
_aVacuum Tubes _c |
||
| 260 |
_aNew York _bMcGraw-Hill book company _c1948 |
||
| 650 | _aVACUUM TUBES, ELECTRONICS | ||
| 690 | _aELECTRONICS AND COMMUNICATION ENGINEERING | ||
| 906 | _a16223 | ||
| 999 |
_c15667 _d15667 |
||