000 00202 a2200097 4500
001 4442
100 _aValley,G.E
245 _aVacuum tube amplifiers
260 _a
_bMcgrawhill
_c
090 _c3640
_d3640
942 _aNUST-CAE
_cM
_c29336
999 _c239515
_d239515