| 000 | 00369pam a2200145a 44500 | ||
|---|---|---|---|
| 082 |
_a621.384 _bSp2v |
||
| 100 | _aSpangenberg, Karl Ralph | ||
| 245 | 1 | _aVACUUM TUBES | |
| 260 |
_aN. Y. _bMcgraw-Hill _c1948 |
||
| 300 | _a860 | ||
| 440 |
_aMcgraw-Hill Electrical And Electronic Engineering Series _v |
||
| 650 | _aVacuum-Tubes | ||
| 964 | _gCIRC | ||
| 997 | _a4977 s C | ||
| 999 |
_c417869 _d417869 |
||