| 000 | 00427nam a2200169Ia 4500 | ||
|---|---|---|---|
| 999 |
_c90734 _d90734 |
||
| 005 | 20220509122155.0 | ||
| 008 | 180710s9999 xx 000 0 und d | ||
| 020 | _a84482 | ||
| 041 | _aEN | ||
| 082 |
_a621.384 _bBEC _223 |
||
| 100 |
_aBECK, A.H.W. _eaut |
||
| 245 |
_aVelocity-modulated thermionic tubes _c/A.H.W.Beck |
||
| 260 |
_aCambridge _bAt the University press _c1948 |
||
| 300 | _a175 p. | ||
| 509 | _aNS | ||
| 942 | _cS | ||