000 00362pam a2200145a 44500
082 _a621.381512
_bK854v
100 _aKrackhardt, Russell H.
245 1 _aVACUUM TUBE ELECTRONICS
260 _aColumbus, Ohio
_bMerrill
_cc1966
300 _a115
440 _aMerrill Series In Electronics
_v
650 _aVacuum-Tubes
964 _gCIRC
997 _aK7466 s C
999 _c387263
_d387263