| 000 | 00411nam a2200145Ia 4500 | ||
|---|---|---|---|
| 999 |
_c90616 _d90616 |
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| 005 | 20230612123109.0 | ||
| 008 | 180710s9999 xx 000 0 und d | ||
| 082 |
_a621.38151 _bSPA _223 |
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| 100 | _aSPANGENBERG, Karl R. | ||
| 245 |
_aVacuum Tubes _c/[by] Karl R. Spangenberg |
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| 260 |
_aNew york _bMcgraw-Hill book co. _c1948 |
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| 300 | _axvii, 860 p. | ||
| 500 | _aIncludes appendixes and index | ||
| 942 | _cS | ||