| 000 | 00429cam a22001571 4500 | ||
|---|---|---|---|
| 005 | 20160318124947.0 | ||
| 008 | 730302s1948 nyua b 000 0 eng | ||
| 082 |
_a621.384132 _bSPA |
||
| 100 | 1 |
_aSpangenberg, Karl R. _96806 |
|
| 245 | 1 | 0 | _aVacuum tubes. |
| 250 | _a1st ed. | ||
| 300 |
_axvii, 860 p. _billus., diagrs. _c24 cm. |
||
| 653 | _aVacuum-tubes | ||
| 942 | _cBK | ||
| 260 |
_aNew York, _bMcGraw-Hill Book Co., _c1948. |
||
| 999 |
_c150138 _d150138 |
||