| 000 | 00382nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 170519s9999 xx 000 0 und d | ||
| 041 | _aEnglish | ||
| 082 | _a621.342/SPA C1 | ||
| 100 | _aKARL R SPANGENBERG | ||
| 245 | _aVACUUM TUBES | ||
| 260 |
_bMCGRAW HILL BOOK COMPANY _aLONDON _c1948 |
||
| 300 | _c860P | ||
| 650 | _aAPPLIED PHYSICS | ||
| 650 | _aENGINEERING | ||
| 942 | _cBK | ||
| 999 |
_c65064 _d65064 |
||