| 000 | 00356nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1969 xx 000 0 und d | ||
| 082 | _a621.381 51 G28I | ||
| 100 | _aGEWARTOWSKI, J. W. | ||
| 245 | 0 | _aIntroduction to electron tubes | |
| 260 |
_bN. Y. _c1969 |
||
| 300 | _a373p | ||
| 650 | _aELECTRON TUBES | ||
| 653 | _aELECTRON TUBES | ||
| 942 |
_2ddc _cB |
||
| 999 |
_c35061 _d35061 |
||