000 00333pam a2200133a 44500
082 _a621.38151
_bV376p
100 _aVan Velzer, Harry Leland
245 1 _aPHYICS AND CHEMISTRY OF ELECTRONIC TECHNOLOGY
260 _aN. Y.
_bMcgraw-Hill
_c1962
300 _a372
650 _aElectron Tubes
964 _gCIRC
997 _a23401 W
999 _c435371
_d435371